Fatimah wants to build a one-sample z interval to

estimate the proportion of students at her school who ate

breakfast every day last week with 90% confidence. She

takes a random sample of 75 students and finds that 20

ate breakfast every day last week.

What critical value z* should Fatimah use to construct

this confidence interval?

A) z* = 1.282

B) z* = 1.645

C) z* = 1.96

D) z* = 2.576

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

idkit the do u know da way and ligma consumed ninja

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

step-by-step explanation: