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Find two different ways to state that two population means are equal for a null hypothesis in a 2-sample z-test. Question 1 options: H0: 1=a

Find two different ways to state that two population means are equal for a null hypothesis in a 2-sample z-test.

Question 1 options:

H0: 1=a ; H0: 1 = b

H0: 1 = 2 ; H0: 1 2

H0: 1 = 7; H0: 1 7

H0: 1 = 2 ; H0: 1 - 2 =0

Question 2

A type I error occurs when the:

options:

test is biased
null hypothesis is incorrectly rejected when it is true
null hypothesis is incorrectly accepted when it is false
sample mean differs from the population mean

Question 3

Which of the following symbols represent a confidence level?

options:

(1-)*100%
1-

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