Question

Based on the sample size of 80 people, the sample mean GPA is 2.9, with a standard error of 0.06. The p-value is:

A) Less than 0.01

B) Between 0.01 and 0.05

C) Between 0.05 and 0.1

D) Greater than 0.1

Answer 1

The p-value is: A) Less than 0.01

The p-value is a measure of the evidence against a null hypothesis. In this case, a p-value less than 0.01 indicates strong evidence to reject the null hypothesis.

The null hypothesis typically posits no effect or no difference, and a p-value less than 0.01 suggests that the observed data is unlikely under the assumption of the null hypothesis.

With a p-value less than 0.01, we reject the null hypothesis, implying a statistically significant difference in GPAs among the sampled population.