Question

4. A standard tennis ball weighs 58.5g. Suppose the weight of tennis balls in a
production plant follows a normal distribution with a standard deviation of 4g. A
quality assurance stall would like to investigate if the balls are satisfied with the
standard. He randomly selected 25 balls and found an average weight of 59.5g.
Can you conclude that the tennis balls meet the standard at the 5% level?
A. Specify the null and alternative hypotheses.
B. Calculate the test statistics.
C. What is the p-value? Calculate the p-value.
D. Determine the rejection region for the p-value.
E. Make a decision regarding the null hypothesis based on the p-value
F. Report the conclusion.

Answer 1