Question

Suppose you want to test the claim that μ1 ≠ μ2. Assume the two samples are random and independent. At a level of significance of α = 0.05, when should you reject H0? Population statistics: σ1 = 1.5 and σ2 = 1.9 Sample statistics: x̄1 = 30, n1 = 50 and x̄2 = 28, n2 = 60 A) Reject H0 if the standardized test statistic is less than -2.575 or greater than 2.575. B) Reject H0 if the standardized test statistic is less than -2.33 or greater than 2.33. C) Reject H0 if the standardized test statistic is less than -1.645 or greater than 1.645. D) Reject H0 if the standardized test statistic is less than -1.96 or greater than 1.96.

          Suppose you want to test the claim that μ1 ≠ μ2. Assume the two samples are random and independent. At a level of significance of α = 0.05, when should you reject H0?

Population statistics:
σ1 = 1.5 and σ2 = 1.9

Sample statistics: x̄1 = 30, n1 = 50 and x̄2 = 28, n2 = 60

A) Reject H0 if the standardized test statistic is less than -2.575 or greater than 2.575.
B) Reject H0 if the standardized test statistic is less than -2.33 or greater than 2.33.
C) Reject H0 if the standardized test statistic is less than -1.645 or greater than 1.645.
D) Reject H0 if the standardized test statistic is less than -1.96 or greater than 1.96.

Added by Emilia R.

Question

Please give Ace some feedback