When the population standard deviations are not known to us when comparing two population means, we substitute the sample standard deviations in their place. When we make this substitution, we rely on the ________ to conduct the hypothesis test.
A) normal distribution
B) binomial distribution
C) Student's t-distribution
D) uniform distribution
Question 2
If the null hypothesis is false, the mean square between is a good estimate for the population variance.
Indicate whether the statement is true or false