Question

In a difference of proportion test with alpha = .05, the critical values(s) for a two-tailed test is/are -2.575 and 2.575 1.96 -1.645 and 1.645 -1.96 and 1.96

Answer 1

Answer:

a)

significance level = 0.05

Here the critical value for two tailed is given below

alpha/2 = 0.05/2

= 0.025

Z0.025 = +/- 1.96 [since from the z table]

So Option D is right answer.

i.e.,

- 1.96 & 1.96

b)

Given,

p value = 0.065

alpha = 0.10

Here we observed that, p value < alpha, so we reject Null Hypothesis at an alpha level of 0.10

It is True.