Find the sample standard deviation. round to the nearest tenth. 15 42 53 7 9 12 14 28 47

Answers

Answer 1
Because the question asks for the sample standard deviation, use this formula: s = square root of (sum of x - xBar)² / (n - 1) There are 9 numbers, there, so n - 1 = 8 Next, find the mean (xBar): 15 + 42 + 53 + . . . + 47 = 227. 227 / 9 = ~25.2 Next, for each number, subtract xBar and square the result, like this: (15 - 25.2)² = 104.0 (42 - 25.2)² = 282.2 (53 - 25.2)² = 772.8 ... Next, add up all those values (i.e., 104 + 282.2 + 772.8...) and divide by (n - 1). In this example, the answer to this is 2,535.2 / 8, or 316.9. Finally, take the square root of that number to get s. sqrt (316.9) = 17.8. Therefore, the answer is 17.8.

Related Questions

Evaluate.
3+2⋅6
_____
3

Answers

The answer is 5. Hope that helps :)
3 plus 2 is 5 obviously, 5 times 6 is 30. if thats what youre looking for but you arent really saying what you need

A 150° angle is an obtuse angle. What do you Notice about the statement below? What do you Wonder about the statement?

Answers

The statement is just a fact.

Brad makes his own snack mix using whole grain cereal and mixed nuts. One batch of his recipe makes 6 cups of snack mix. Brad uses 3 times as much cereal as mixed nuts. The system below can be used to find the number of cups of cereal and number of cups of mixed nuts Brad uses to make one batch of snack mix.


Which describes the ingredients Brad uses to make one batch of snack mix?

Answers

let
c = cereal
m = mixed nuts
c = 3m
c + m = 6
3m + m = 6
4m = 6
m = 6/4
m = 3/2 or 1 &1/2 cup
then c = 3m
c = 3(3/2)
c = 9/2 or 4 &1/2 cup

Answer:

The answer is 4.5 cups of cereal and 1.5 cups of mixed nuts

Step-by-step explanation:

Let 'c' be the number of cups of cereal.

Let 'n' be the number of cups of mixed nuts.

One batch of his recipe makes 6 cups of snack mix, so equation becomes:

[tex]c+ n=6[/tex]     ..... (1)

Also given that Brad uses 3 times as much cereal as mixed nuts, so equation becomes:

[tex]c=3n[/tex]     ......(2)

Substituting (2) in (1)

[tex]3n+n=6[/tex]

=> [tex]4n=6[/tex]

=> [tex]n=1.5[/tex]

Since c = 3n, then

[tex]c=3*1.5=4.5[/tex]

So, the answer is 4.5 cups of cereal and 1.5 cups of mixed nuts.

Jessica has two strings. the first string measures 80 cm and the second string measures 64cm. she wants to cut the strings into equal lengths. of the least number of strings equal length is 16 what is the length of each string

Answers

The highest common denominator between 80 and 64 is 16. This means no string can be cut longer than 16 inches for them all to have the same length.

A segment with endpoints X (6, 2) and Y (- 1, - 3) is rotated 90º about the origin. What are the coordinates of X Prime and Y Prime?

Answers

Final answer:

A segment with endpoints X (6, 2) and Y (- 1, - 3) when rotated 90 degrees about the origin will result in new endpoints X' (-2, 6) and Y' (3, -1).

Explanation:

This problem deals with the concept of point rotation in a 2D coordinate plane around the origin. When any point (X, Y) is rotated 90 degrees counter-clockwise about the origin, the new position, let's say (X', Y'), can be calculated by using the formulas X' = -Y and Y' = X. Therefore, applying these rotations to the points X(6,2) and Y(-1,-3), we get X'(-2, 6) and Y' (3, -1). So, the endpoints X Prime and Y Prime of the rotated segment are (-2, 6) and (3, -1) respectively.

Learn more about Point Rotation here:

https://brainly.com/question/29128088

#SPJ12

Final answer:

After rotating a 90-degree rotation about the origin, the coordinates of X (6, 2) and Y (-1, -3) transform to X' (-2, 6) and Y' (3, -1) respectively.

Explanation:

When a point (x, y) is rotated 90º counterclockwise about the origin, it transforms to (-y, x). Let's apply this rule to the endpoints X (6, 2) and Y (-1, -3).

The coordinates of X prime would be (-2, 6) that is, (-y, x).

The coordinates of Y prime would be (3, -1) that is, (-y, x).

Thus, the transformed coordinates for X and Y would be (-2, 6) and (3, -1) respectively after a 90-degree rotation about the origin.

Learn more about Rotation of Coordinates here:

https://brainly.com/question/31180198

#SPJ12

Janet Fog's uncle, Pete Moore, promised her a gift of $30,000 upon her graduation from law school or $1500 every quarter for the next four years. if the money could be invested at 12% compounded quarterly, which offer should Janet choose?

Answers

First calculate the future value of the annuity
The formula to find the future value of an annuity ordinary is
Fv=pmt [((1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT quarterly payment 1500
R interest rate 0.12
K compounded quarterly 4
N time 4 years
Fv=1,500×(((1+0.12÷4)^(4×4)
−1)÷(0.12÷4))
=30,235.32

Now compare the amount of the annuity with amount of the gift
30,235.32−30,000=235.32
So as you can see the amount of the annuity is better than the amount of the gift by 235.32

Second offer is better

Hope it helps!

Erin is 8 years younger than twice Paula’s age. The sum of their ages is 40. How old is Erin

Answers

You do the sum(40) subtracted by 8, the answer from that divided by 2 since Erin's two times younger.
40-8=32
32÷2=16
Then if you want to check it you do the opposite and get the same sum(40) so 16×2=32 and 32+8=40
Final answer:

To solve this problem, we set up two linear equations based on the given information and solved them simultaneously. We found that Erin's age is 24 years.

Explanation:

This problem is a classic example of a linear equation. We can set up two equations based on the information given:

Erin is 8 years younger than twice Paula’s age. This can be written as E = 2P - 8.The sum of their ages is 40. This can be written as E + P = 40.

Upon substituting the value of E (Erin's age) from the first equation into the second, we get: 2P - 8 + P = 40. Simplifying this gives P = 16. Substituting P = 16 into the first equation, we find E = 24. Therefore, Erin is 24 years old.

Learn more about Linear Equations here:

https://brainly.com/question/32634451

#SPJ12

How much is 8% of 1249? round the answer to the nearest hundredth

Answers

First of all you make the multiplier:
8/100 = 0.08

Then you multiply the number by the multiplier:
1249*0.08 = 99.92

Hope this helps! :)
It is 99.92. I'm sure that thats the answer.

Solve for x. x/3≤−6

Answers

x ≤ -18. I hope this helps love! :)

Answer:

Hence, the value of x is [tex]x\leq -18[/tex]

Step-by-step explanation:

Consider the provided inequity.

[tex]\frac{x}{3}\leq -6[/tex]

We need to solve the above inequity of x.

Multiply both the side by 3.

[tex]3\times\frac{x}{3}\leq 3\times -6[/tex]

[tex]x\leq -18[/tex]

Hence, the value of x is [tex]x\leq -18[/tex]

Is the relation a function? (3, 6) (10, 13) (11, 1) (13, 6)

Answers

Answer: yes this is a function

-------------------------------------------------------

The reason why is because we don't have any repeated x values. Each input (x) leads to exactly one output (y). If you plotted all the points, then you would not be able to pass a single vertical line through more than one point. So this graph passes the vertical line test.

Yes, Given relation is a function.

Here,

Points are given as,

(3, 6) (10, 13) (11, 1) (13, 6)

What is a function?

A function is defined as a relation between a set of inputs having one output each.

Now,

The given relation is a function because we don't have any repeated x values. Each input (x) leads to exactly one output (y). if we plotted all the points, then we would not be able to pass a single vertical line through more than one point. Hence, this graph complies vertical line test.

So, Given relation is a function.

Learn more about the function visit:

https://brainly.in/question/48224689

#SPJ2

7.1 + 16.04 – .2 = ?

Answers

(7.1 + 16.04) - .2 = 22.94
hope i helped
can i have brainlist


07.10
16.04
+------
23.14
00.20
-____
22.94 :)

Toni can carry up to 23 lb in her backpack. Her lunch weighs 1 lb, her gym clothes weigh 2 lb, and her books (
b. weigh 4 lb each. How many books can she carry in her backpack? The inequality is . Toni can carry up to books in her backpack.

Answers

1 + 2 + 4b < = 23
3 + 4b < = 23
4b < = 23 - 3
4b < = 20
b < = 20/4
b < = 5....so she can carry, at the most, 5 books <===

Alexandra is two years older than brad. cecilia is three years younger than alexandra. all three ages added together gives a total of 37 years. how old is each student?

Answers

Let us say that:

x = age of brad

x + 2 = age of Alexandra

(x + 2) – 3 = age of Cecilia = x – 1

 

We are also given that:

x + x + 2 + x – 1 = 37


solving for x:

3x + 1 = 37

3x = 36

x = 12 = age of brad

x + 2 = 14 = age of Alexandra

x – 1 = 11 = age of cecilia

A student has to earn a total of at least 280 points on four tests in his math class to pass the class, and his total on the first three tests is 197 points. set up an inequality necessary to find the minimum number of points that he must earn on the fourth test to pass the class. then solve the inequality.

Answers

try this equation 280 - 197 = x

You randomly select one card from a​ 52-card deck. find the probability of selecting a blackblack twotwo or a blackblack eighteight

Answers

Since there are 26 black cards (1/2 of 52) and 2 black twos (one for each suite, and there are 2 black/red suites), we can use the same logic to get that there are 2 black eights. 2+2=4, and since there are 52 cards, you have a 4/52 or 1/13 (we get this because 4 goes into 52 13 times) chance of getting a black 8 or 2.

N is between M and P. if MP=12 and NP=8, then what is the length of MN?

Answers

The length of MN is 4. Subtract MP by NP.
12-8=4

Give the slope intercept form of the equation of the line that is perpendicular to 5x-3y=8

Answers

hello : 
let the slope : a    and ; b the slope of the line : 5x - 3y = 8
the line that is perpendicular to 5x-3y=8  so : a×b = - 1 
but : 
5x - 3y = 8...      y = (5/3)x - 8/3  when : b = 5/3
 the slope intercept form of the equation of the line that is perpendicular
 to 5x-3y=8 is : y = (5/3)x +c 

A regular hexagon rotates counterclockwise around its center. It turns through angles greater than 0° and less or equal to 360°. At how many different angles of a hexagon map onto itself?

Answers

there are 6 sides to a hexagon

360/6 = 60 degrees

 so it will map onto itself at 60, 120, 180, 240, 300 & 360

 there are 6 different angles



The sum of two numbers is 64 . the larger number is 22 more than the smaller number. what are the numbers?

Answers

64-22 = 42

42/2 = 21

21+22 = 43

21 + 43 = 64

 the numbers are 21 & 43

The larger number is 43 and the smaller number is 21.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The numbers will be calculated as:-

Let the larger number be L and the smaller number be S.

L + S = 64

From the given data the larger number is 22 more than the smaller number

L = S + 22

Put L = S + 22 in the above equation.

S + 22 + S  = 54

2S  = 64  -22

2S = 42

S = 42 / 2 = 21

L = S +22 = 21 + 22 = 43

Therefore, the larger number is 43 and the smaller number is 21.

To know more about Expression follow

https://brainly.com/question/723406

#SPJ2

I need help with equation number 6

Answers

Combine like terms
-2x-4=-2x-4

Since the equations are the same, the answer is infinitely many solutions.

Three member of a tug-of-war team weigh 163 pounds, 148 pounds. and 143 pounds. what must the fourth member weight if the average weight is 150 pounds?

Answers

The answer is x=146 :):):):)

When is it helpful to round the quotient to the nearest hundredths?

Answers

Well, if the quotient is a repeating decimal, such as 1 divided by 3, or 0.3333333..., then of course it would be much easier to just say 0.33.

It's also helpful when there are a ton of digits, or you just want an approximate answer.

Finding the average values of the representative coordinates of the two endpoints of a line segment in a coordinate plane is also known as using the _______________ formula.

Answers

That would be known as the midpoint formula
m = (x1 + x2)/2 , (y1 + y2)/2

Which of the following describes the graph of {x | 1 < x < 2}? open circles on 1 and 2 open circles on 1 and 2, arrows pointing out open circles on 1 and 2, line segment between no solution

Answers

{x| 1 < x < 2 }

there will be open circle because there is no equal sign in the problem....there will be a line segment in between...because basically, u would put an open circle on 1, and open circle on 2 and shading in between

Answer:

open circles on 1 and 2

Write the solution to the given inequality in interval notation

Answers

0<x<=6 

X is greater than 0 but less that or equal to 6.

(0,6]
The answer is (0, 6].

This means 0 is not included but 6 is included in the shaded region.

A rectangle has a length of 9.00 inches and a width of 4.25 inches. What is the area in square inches? Round to the correct significant digits. DO I ADD UNITS?????

Answers

Both numbers (9.00 and 4.25) have three sig-figs. This means that the final answer will have three sig-figs as well.

Multiply the numbers to get: 9.00*4.25 = 38.25 which rounds to 38.3 because the answer must have three sig-figs. 

The units will be "square inches" or "inches^2" or "in^2". There are various ways to write the units portion.

Overall, the final answer is 38.3 square inches

Three (6‐sided) dice are thrown what is the probability that the same number appears on all three dice?

Answers

3/18 This is because there are 18 sides in total if you throw 3 dice.

Harry's school is selling t-shirts to raise money for the archery team. The school will receive 35% of the total sales which can be modeled by the equation y = 0.35x, where x represents the total number of sales. What is the meaning of the x-intercept in the equation?

Answers

Answer: The x-intercept represents the number of sales when no money has been raised.

Answer:

X-intercept states that the graph crosses the x-axis.

Substitute y = 0 and solve for x.

As per the statement:

Harry's school is selling t-shirts to raise money for the archery team.

The school will receive 35% of the total sales which can be modeled by the equation:

y = 0.35x

where, x represents the total number of sales and y represents the total cost of sale.

By definition of x-intercept:

0 = 0.35x

⇒x = 0

Therefore, the x-intercept in the equation represents:

The number of sales when no money has been raised.

If 1 cm = 0.394 inches, how many inches are in 1 kilometer?

Answers

Since 1 km is 100,000 cm there are 39,400 inches in a kilometer

Answer: There are 39400 inches in 1 kilometers.

Step-by-step explanation:

Since we have given that

1 cm = 0.394 inches

As we know that

1 m = 100 cm

1 km = 1000 m

1000 m = 100×1000=100000 cm

1 km = 100000 cm

So, it becomes,

[tex]1\ km=0.394\times 100000\\\\1\ km=39400\ inches[/tex]

Hence, there are 39400 inches in 1 kilometers.

If you live in Dallas, then you live in Texas, what is the contrpositive of this?

Answers

Thanks for your question!

If you live in Texas, you can live in Dallas.

Hope this helps!
Other Questions
Danny's truck has a fuel tank with a capacity of 20 gallons of gas. The truck averages 17 miles per gallon of gas. The function M(g) = 17g represents the number of miles that Danny's truck travels on g gallons of gas. What domain and range are reasonable for the function? D: 0 g 340 R: 0 M(g) 20 D: 0 g 20 R: 17 M(g) 340 D: 17 g 20 R: 20 M(g) 340 D: 0 g 20 R: 0 M(g) 340 NextReset the first term of a arithmetic sequence is 2 and the 4th term is 11, how do I find the sum of the first 50 terms What did the declaration of independence allow the american colonies to do? The mass of Earth is approximately 5.9 x 1024 kg and the mass of Venus is approximately 4.9 x 1025 kg. What is their total combined mass expressed in scientific notation? Show your work. DID I GET THE ANSWER RIGHT? IF NOT EXPLAIN HOW TO FIND THE ANSWER!! AND THE WORK!!WORK:5.9 x 4.9 = 28.9125-24= 1ANSWER:28.91 x 10^1 ok i need help me please Which is not required for the development of civilization?(A. Cities)(B. Wheeled transportation)(C. Various kinds of work)(D. More food than is needed for survival) How many solutions does the equation have? 3+x=23x The __________ effect occurs because humans have more cortical neurons that respond to horizontal and vertical orientations than slanted orientations. What is 3786 using place value with regrouping What is the value of the expression All of 3.6 multiplied by 10 to the power 8 over all of 1.2 multiplied by 10 to the power 3? a 2.4 10^5 b 3.0 10^11c 3.0 10^5 d 2.4 10^11 A 5- digit number has digits 0,5,7,9, and 0. To the nearest thousand, it rounds to 80,00 What is the number? WHO CAN HELP WITH SPANISH?! PleaseElige la forma correcta de presente progresivo para el verbo.Ella (leer) un libro.Question 15 options:A) esta leyendoB) est leendoC) esta leiendoD) est leyendo Simplify y 5 y 3 y 2 Explain why a large animal like a humpback whale can feed on such small animals as krill or other plankton and yet still have the energy and mass available to produce such a large biomass. What obstacles did the English settlers in the Chesapeake overcome? Read the excerpt below and answer the question. Finally ripped my armor, And so I ran. I ran past the old maple by the terraced hall And the singing crickets under the latticed wall, And I kept on running down the walk Paved with pebbles of memory big and small Based on your understanding of parallell structure, how does Chang use it? Chang uses parallel structure in this excerpt from "Garden of My Childhood" to link several key phrases. Chang uses parallel structure in this excerpt from "Garden of My Childhood" to seperate several key phrases. Chang uses parallel structure in this excerpt from "Garden of My Childhood" to split several key phrases. Chang uses parallel structure in this excerpt from "Garden of My Childhood" to divide several key phrases. Conjunctions do not... a. join sentences together. b. join pronouns and antecedents. c. join clauses. d. join items in a list. Which expression results when the change of base formula is applied to log4(x+2) ? what are the central ideas of smiths text and what is the purpose of his account the function s(v)=3v describes the side length, in units, of a cube with a volume of V cubic units. jason wants to build a cube with a minimum of 64 cubic centimeterswhat is a reasonable range for s, the side length, in centimeters, of Jason's cube? a. s > 0 b. s >_4c. s >_ 8d. s>_ 16 Steam Workshop Downloader