# Statistical Difference in Two Sample Means

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Question a: Which of the following conditions must be met to conduct a test for the difference in two sample means?

a. Data must be at least of interval scale

b. Populations must be normal

c. Variances in the two populations must be equal

d. A and B correct

Question b: Suppose we test the difference between two proportions at the 0.05 level of significance. If the computed z is -1.07, what is our decision?

a. Reject the null hypothesis

b. Do not reject the null hypothesis

c. Take a larger sample

d. Reserve judgment

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This solution helps with a problem regarding the conditions that need to be met to conduct a test for differences in sample means.

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Stats: difference in two sample means

Question a: Which of the following conditions must be met to conduct a test for the difference in two sample means? Choose the right answer:

a. Data ...

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