The mean throwing distance of a football for a Jacksonville
Jaguars quarterback, is 39.375 yards with a standard deviation of
2 yards. The team Coach tells the quarterback to adjust his grip to
get more distance. The coach records the distances for 20 throws.
The 20 throws calculate to a mean of 44.95 yards. The coach
thought the different grip helped. Conduct a hypothesis test using
a preset a = 0.05.
Assume the throw distances for footballs are normal.
Determine the following:
1. What type of test us this?
2. Set up a hypothesis test and identify the null and alternative.
3. Find the p-value.
4. Sketch the graph and describe it.
5. State your conclusion