Ruby is studying the mean waist size of all students attending her college. She collects data from the 25 students in her statistics class. Which type of sampling is used?

Answers

Answer 1

Answer:

hlo anyone girl here tell who is boy


Related Questions

An employee makes a career change, her original salary was 65,000 and now it’s58,000 at her new job . What percent decrease was the salary change?

Show work

Answers

Answer:

about 21 percent

Step-by-step explanation:

Mark jogs 10 miles in 2 hours.
Come up with a ratio that shows the distance in miles to the time taken in hours. Simplify your ratio if needed


I needsddd helpppp pleaseeeeee

Answers

Answer:

5 miles / hour

Step-by-step explanation:

it is really simple :

10 miles

2 hours

=>

10 miles / 2 hours

or simplified

5 miles / hour

Scatterplots show:

A the frequency of individual test scores.
B causal relationships between two variables.
C two scores represented as individual points on the graph.
D bars representing different variables.

Answers

Answer:

B. causal relationships between two variables

Scatterplots show causal relationships between two variables. Option B is correct.

What are Scatter plots?

A scatter plot is a collection of points plotted on two axes, horizontal and vertical. Scatter plots are useful in statistics because they illustrate the extent, if any, of correlation between the values of observed quantities or phenomena (called variables).

Here,

Given that, to justify Scatterplots,
Plotting a scattergram using the data points can assist in determining whether they have a probable relationship.

Thus, Scatterplots show causal relationships between two variables. Option B is correct.

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Write an equation that expresses the following relationship.

u varies directly with the square of p and inversely with d

In your equation, use k as the constant of proportionality.

Answers

Given:

u varies directly with the square of p and inversely with d.

To find:

The equation for the given situation.

Solution:

If y is directly proportional to x, then

[tex]y\propto x[/tex]

If y is inversely proportional to x, then

[tex]y\propto \dfrac{1}{x}[/tex]

It is given that u varies directly with the square of p and inversely with d. So,

[tex]u\propto \dfrac{p^2}{d}[/tex]

It can be written as:

[tex]u=k\dfrac{p^2}{d}[/tex]

Where, k is the constant of proportionality.

Therefore, the required equation is [tex]u=\dfrac{kp^2}{d}[/tex].

Find the measure of the missing angles in the regular polygon below.

Answers

Step-by-step explanation:

First, we can see that the angles inside the polygon form a full circle, as it goes fully around. Therefore, the sum of the angles around the center of the circle (such as m < 7) is 360 degrees. Since it is a regular polygon, and the lines are going from the center to its corners, the 6 angles directly surrounding the center are equal.

Each angle is therefore 360/6 = 60 degrees, so m<7 is 60 degrees.

For m<8, we can see that a line bisects one of the 6 angles surrounding the center. Therefore, m<8 is 1/2 of the angle it bisects, which is equal to 360/6 = 60 degrees, and m<8 = 60/2 = 30 degrees

Finally, we can see that there are 6 sides of the polygon. For a polygon with n number of sides, the sum of its interior angles is equal to (n-2) * 180. Here, there are 6 sides, so the sum of this polygon's interior angles is (6-2) * 180 = 4 * 180 = 720. Because this is a regular polygon, each interior angle is the same, and because there are 6 of them, each one is 720/6 = 120 degrees. As shown in the picture, m < 9 is seemingly one-half of an interior angle, as it is bisected by a line from the center to a corner.

Therefore, m <9  = 120 /2 = 60 degrees

In terms of the perimeter of a regular polygon, the area of a regular polygon is given as, Area = (Perimeter × apothem)/2, in which perimeter = number of sides × length of one side.

A certain baseball team has 23 players. Only nine can be on the field at a time. Each of the nine players on the field has a distinct field position: pitcher, catcher, first baseman, second baseman, third baseman, short stop, left field, right field, or center field. Assume for the moment that every player is qualified to play every position.

Required:
How many ways are there to fill either the pitcher or catcher field position (but not both) from among the 23 players (leaving the other field positions empty)?

Answers

Answer:

[tex]P \& C _{ways}=46ways[/tex]

Step-by-step explanation:

From the question we are told that:

Sample size [tex]n=23[/tex]

Generally the pitcher or catcher field position can be filled in

23 way respectively

Where

No. ways for to fill Pitcher

[tex]P_{ways}=23 ways[/tex]

No. ways for to fill Catcher

[tex]C_{ways}=23 ways[/tex]

Therefore

Applying counting Principles

No. ways to fill both

[tex]P \& C _{ways}=23+23[/tex]

[tex]P \& C _{ways}=46ways[/tex]

Your calculator is showing a result of 248.592.
What is this to the nearest whole number?

Answers

the nearest whole is 200.600
200.600 should be the nearest whole

Use the definition of a Taylor series to find the first four nonzero terms of the series for f(x) centered at the given value of a. (Enter your answers as a comma-separated list.)
f(x) = 7/1+x a=2

Answers

If f(x) = 7/(1 + x), then

f (2) = 7/3

f '(x) = -7/(x + 1)²   ==>   f ' (2) = -7/9

f ''(x) = 14/(x + 1)³   ==>   f '' (2) = 14/27

f '''(x) = -42/(x + 1)⁴   ==>   f ''' (2) = -14/27

Then the Taylor series of f(x) about a = 2 is

7/3 + 1/1! (-7/9) (x - 2) + 1/2! (14/27) (x - 2)² + 1/3! (-14/27) (x - 2)³

= 7/3 - 7/9 (x - 2) + 7/27 (x - 2)² - 7/81 (x - 2)³

What is the slope of the line that contains these points? xxx 454545 494949 535353 575757 yyy 101010 555 000 -5−5minus, 5 slope:

Answers

Answer:

-5/4

Step-by-step explanation:

Given :

x : 45, 49, 53, 57

y : 10, 5, 0, - 5

The slope of the line :

Slope = Rise / Run

y2 = - 5, y1 = 10

x2 = 57, x1 = 45

Rise = y2 - y1 = - 5 - 10 = - 15

Run = x2 - x1 = 57 - 45 = 12

The slope = Rise / Run = - 15 / 12 = - 5/4

Answer:

-1

Step-by-step explanation:

i brought the answer correct

What is the least possible degree of a polynomial that has roots -5, 1 + 4i, and -4i?

3
2
5
4

Answers

The least possible degree of polynomial is 2

Find the measure of the missing angles.
WILL GIVE BRAINLIEST

Answers

Answer:

<d = 90

<e = 46  

<f = 134

Step-by-step explanation:

<d = 90 since it forms a straight line with a 90 degree angle

<e = 46  since they are vertical angles and vertical angles are equal

<f = 134  since it is a linear pair with 46 ( they add to 180)  f+46 = 180

              f = 180-46    f =

[tex]{\footnotesize{\bold{\textbf{\textsf{{\fcolorbox{brown}{gold}{~Brainliest~answer}}}}}}}[/tex]

See this attachment

three cards are drawn from an ordinary desk and not replaced
find probability a.getting 3 jackets​
​​​

Answers

Answer:

Assuming you meant three jacks:

1 in 5525 or else 1/5525.

Step-by-step explanation:

You start with a full deck of 52 and 4 jacks. After each draw, you reduce both the jacks and total deck by one. Your first draw would be 4/52. The next would be 3/51. The final draw would be 2/50. You multiply each fraction together as you need all of them to happen, and that is your odds of drawing 3 jacks in a row without replacement.

Please help!! Which two equations are the equations of vertical asymptotes of the function y = 5∕3 tan(3∕4x)?
A) x = 0 and x = 2π∕3
B) x = 4π∕3 and x = –4π∕3
C) x = 0 and x =4π∕3
D) x = 2π∕3 and x = –2π∕3

Answers

9514 1404 393

Answer:

  D) x = 2π∕3 and x = –2π∕3

Step-by-step explanation:

The tangent function has asymptotes at ±π/2, so the corresponding values of x are ...

  (3/4)x = ±π/2

  x = (±π/2)(4/3) = ±2π/3 . . . . matches choice D

The answer is D) x=2TT/3and x =-2TT/3

The ferry family rented 50 chairs for $150. Which expression can be used to find the cost per chairs.

Answers

Answer:

3$per chair

Step-by-step explanation:

50/150$=3

If 3 x 50=150

Answer:

150/50

Step-by-step explanation:

150 divided by 50 = 3

Hope this helps!

Salma invested $8000 in a fund for 6 years and was paid simple interest. The total interest that she received on the investment was $1400. As a percentage, what was the annual interest rate of her investment?

Answers

9514 1404 393

Answer:

  about 2.917%

Step-by-step explanation:

The simple interest formula can be used. Fill in the known values and solve for the unknown.

  I = Prt . . . . principal P invested at rate r for t years

  1400 = 8000(r)(6)

  r = 1400/48000 = 7/240 = 0.0291666...

Salma's interest rate was about 2.917% per year.

Which polynomial correctly combines the like terms and puts the given polynomial in standard form? -5x^3y^3+8x^4y^2-xy^5-2x^2y^4+8x^6+3x^2y^4-6xy^5

Answers

Given:

The polynomial is:

[tex]-5x^3y^3+8x^4y^2-xy^5-2x^2y^4+8x^6+3x^2y^4-6xy^5[/tex]

To find:

The simplified form of the given polynomial in standard form.

Solution:

We have,

[tex]-5x^3y^3+8x^4y^2-xy^5-2x^2y^4+8x^6+3x^2y^4-6xy^5[/tex]

Combining the like terms, we get

[tex]=-5x^3y^3+8x^4y^2+(-2x^2y^4+3x^2y^4)+8x^6+(-xy^5-6xy^5)[/tex]

[tex]=-5x^3y^3+8x^4y^2+x^2y^4+8x^6-7xy^5[/tex]

Now, rewrite this polynomial in standard form.

[tex]=8x^6+8x^4y^2-5x^3y^3+x^2y^4-7xy^5[/tex]

Therefore, the required polynomial in standard form is [tex]8x^6+8x^4y^2-5x^3y^3+x^2y^4-7xy^5[/tex].

Suppose you deposit $500 in a savings account where the interest earned is compounded
continuously at a rate of 10%. How many years will it take the balance in the account to reach
$8000 (round your answer to the nearest year)?

Answers

14 years after rounding to the nearest year

Factor 60y-90-20X to identify the equivalent expressions.
Choose 2 answers:

A) 5(14y−16−4x)

B) 2(30−45−10)

C) 5(12y−18−4x)

D) 10(6y−9−2x)


Please I need help :)

Answers

The answers are C and D! hope this helps :)

Find the measure of the missing angles. WILL GIVE BRAINLIEST

Answers

D = 90
This is because any line is equal to 180 degrees, we see that d is situated on a line that continues into another angle, the other angle is 90 degrees, so we minus 90 from 180, to get 90.

E = 99
E is situated on a line with the other angle F, F = 81 (see below) so we minus 81 from 180


F = 81
F is situated on a line, we minus it from the other angle situated on the same line, so we minus 99 from 180to get 81

Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.

The number of bacteria in a colony increases by 10% every 2 hours. What is the overall percent increase after 4 hours?

Answers

The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the culture after 2 hours and 350 bacteria after 4 hours.

The overall percent increase after 4 hours is 21% if the number of bacteria in a colony increases by 10% every 2 hours option (G) is correct.

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

We have:

The number of bacteria in a colony increases by 10% every 2 hours.

Let there be 100 bacteria in the starting

In the first 2 hours :

= (100×10%) + 100

= 10 + 100

= 110

Again after 2 hours:

= (110×10%) + 110

= 11 + 110

= 121

= (121 - 100)

= 21

Thus, the overall percent increase after 4 hours is 21% if the number of bacteria in a colony increases by 10% every 2 hours option (G) is correct.

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The combined mass of 100 nickels is 500,000 milligrams. What is the mass of each nickel?

Answers

Answer:

5 grams = 500 centigrams = 5000 milligrams = 5000000 micrograms

Step-by-step explanation:

So the only correct answer in your choices is the third option, 5000 milligrams.

PLEASE ANSWER. I WILL GIVE BRAINLIEST FAST

Answers

Answer:

It is a right triangle

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

given f(x)=2x-4 and g(x)=x213, determine gf[x]]​

Answers

Step-by-step explanation:

you have to substitute the function g(x) where there's x in the function f(x)

gf(x)=2(x213)-4

if that's x two thirteen then you can multiply the 2 outside the brackets by it

giving you a final answer of

gf(x)=426x-4

hope it helps and sorry if am wrong

what are all the solutions (in exact values) to tan x = 1/4 [-π,π] ?

Answers

9514 1404 393

Answer:

arctan(1/4)arctan(1/4) -π

Step-by-step explanation:

The inverse tangent of 1/4 is an irrational number, only expressible exactly as ...

  arctan(1/4)

This is a first-quadrant angle. There is a matching third-quadrant angle with the same tangent:

  arctan(1/4) -π

Determine the area of the given parallelogram with length 11 and altitude five

Answers

9514 1404 393

Answer:

  55 square units

Step-by-step explanation:

The area of a parallelogram is the product of base length and height:

  A = bh

  A = (11)(5) = 55 . . . area of the given parallelogram in square units

Adult tickets to the fall play cost $8 and student tickets cost $4. The drama class sold 20 more adult tickets than student tickets
to the fall play. If the class collected $840 from ticket sales, how many adult tickets were sold?
The drama class sold
adult tickets

Answers

Answer:

A= 80

Step-by-step explanation:

I'm not good at explaining my work. I sometimes can look at the problem and find the answer in 2 seconds.

Find f^-1 for the function f(x)=(x-10)^3+4

Answers

Answer:

f^(-1)(x)=(x-4)^(1/3)+10

Step-by-step explanation:

So to find the inverse we need to first solve the equation y=(x-10)^3+4 for x.

Subtract 4 on both sides:

y-4=(x-10)^3

Cube root (or raise both sides to 1/3 power):

(y-4)^(1/3)=x-10

Add x on both sides:

(y-4)^(1/3)+10=x

Swap x and y:

(x-4)^(1/3)+10=y

Symmetric property of equality:

y=(x-4)^(1/3)+10

So f^(-1)(x)=(x-4)^(1/3)+10.

How many of 320 million Americans would you predict wear contact lens

Answers

Answer:

I think 40 - 60 Million Americans would wear contact lenses.

Need help giving 10 Points. Answer—and explanation

Answers

I think it’s the 3rd one because 4x6=24, and these numbers can be multiplied into 24

Please help out really need it !!

Answers

Answer:

use the area formula

Step-by-step explanation:

Answer:

rounded to the nearest tenth i think its 40

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