Andy Roddick, a former professional tennis player believes he can make 70% of his first serves that are at least 110 mph. His friends believe the percentage should be smaller than 70%. They challenged Andy to do 400 first-serves. Andy successfully served 260 times. The null hypothesis is that he can serve 70% of his first serves. The observed percentage is [A]%. Find the standard error for percentage. Hint: The SD for the box model is The standard error for percentage is [B]%. Round your answer to the nearest tenth of a percent(for example 6.3%) The z-statistic is [C]. Round your answer to two decimal places. The p-value is [D]%. Round your answer to the nearest tenth of a percent(for example 6.3%) If the significance level is set at 5%, do you reject the null hypothesis? Write yes or no. [E] If the significance level is set at 1%, do you reject the null hypothesis? Write yes or no. [F]
Andy Roddick, a former professional tennis player believes he can make 70% of his first serves that are at least 110 mph. His friends believe the percentage should be smaller than 70%. They challenged Andy to do 400 first-serves. Andy successfully served 260 times.
The null hypothesis is that he can serve 70% of his first serves.
The observed percentage is [A]%. Find the standard error for percentage. Hint: The SD for the box model is
The standard error for percentage is [B]%. Round your answer to the nearest tenth of a percent(for example 6.3%)
The z-statistic is [C]. Round your answer to two decimal places.
The p-value is [D]%. Round your answer to the nearest tenth of a percent(for example 6.3%)
If the significance level is set at 5%, do you reject the null hypothesis? Write yes or no. [E]
If the significance level is set at 1%, do you reject the null hypothesis? Write yes or no. [F]
Trending now
This is a popular solution!
Step by step
Solved in 7 steps with 2 images
