Question 1
In a test of
H0:
μ = 250 against
Ha:
μ ≠ 250, a sample of
n = 100 observations possessed mean

= 247.3 and standard deviation
s = 11.4. Find and interpret the
p-value for the test.
Question 2
The scores on a standardized test are reported by the testing agency to have a mean of 75. Based on his personal observations, a school guidance counselor believes the mean score is much higher. He collects the following scores from a sample of 50 randomly chosen students who took the test.
Find and interpret the
p-value for the test of
H0:
μ = 75 against
Ha:
μ > 75.