Z-test
Z-test Q1. Short state A country has a population average height of 65 inches with a standard deviation of 2.5 . A person feels people from his state are shorter. He takes the average of 20 people and sees that it is 64.5. At a 5% significance level (or 95% confidence level), can we conclude that people from his state are shorter, using the Z-test? What is the p-value? A. p-value = 0.186, and hence people from the state are shorter B. p-value = 0.815, and hence people from the state are shorter C. p-value = 0.186, and hence people from the state are not shorter D. p-value = 0.815, and hence people from the state are not shorter Correct Answer: p-value = 0.186, and hence people from the state are not shorter Explanation: # Null Hypothesis (H0): People from the pe...