2 years ago

Show work please thanks

Mathematics

1 answer:

Tju [1.3M]2 years ago

3 0

Be more specific on the first one

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Which mean the same as 60%? Check all that apply

andrew-mc [135]

Answer:

a, c, d

Step-by-step explanation:

1. a: 3/5=0.6=60%

2. c: 0.60=60%

3. d: 6/10=0.6=60%

6 0

2 years ago

Read 2 more answers

You want to test your newly created Web site, so you have 250 people access it from random locations at random times. Of the peo

Arte-miy333 [17]

Answer: 505

Step-by-step explanation:

The formula to find the sample size n , if the prior estimate of the population proportion (p) is known:

$n= p(1-p)(\dfrac{z}{E})^2$ , where E= margin of error and z = Critical z-value.

Let p be the population proportion of crashes.

Prior sample size = 250

No. of people experience computer crashes = 75

Prior proportion of crashes $p=\dfrac{75}{250}=0.3$

E= 0.04

From z-table , the z-value corresponding to 95% confidence interval = z=1.96

Required sample size will be :

$n=0.3(1-0.3)(\dfrac{1.96}{0.04})^2$ (Substitute all the values in the above formula)

$n= (0.21)(49)^2= 0.21\times2401$

$n= 504.21\approx505$ (Rounded to the next integer.)

∴ Required sample size = 505

6 0

2 years ago

???? I don’t understand how to do this problem

Firdavs [7]

I think you are correct actually.

6 0

3 years ago

WILL GIVE BRAINLIEST!!!!!

Phoenix [80]

It’s either A or B but I would choose B as the correct answer

3 0

2 years ago

F(x)= 1/x−3+7 Find the inverse of f(x) and its domain.

castortr0y [4]

Answer:

f(x)^-1 = x - 4

D: {x is all real numbers}

Step-by-step explanation:

change f(x) to y

switch x with y and vice versa

solve for y

4 0

2 years ago