# Question: In the year that this exercise was written there were

In the year that this exercise was written, there were 611 challenges made to referee calls in professional tennis singles play. Among those challenges, 172 were upheld with the call overturned. Assume that 30% of the challenges are successfully upheld with the call overturned.

a. Find the probability that among the 611 challenges, the number of overturned calls is exactly 172.

b. Of the 611 challenges, the number of 172 overturned calls is fewer than 30%. Find the probability that among the 611 challenges, the number of overturned calls is 172 or fewer. If the 30% rate is correct, is 172 overturned calls for 611 challenges an unusually low number?

c. Which result is useful for determining whether the 30% rate is correct: part (a) or part (b)? Explain.

d. Is there strong evidence to suggest that the rate of overturned calls is not 30%?

a. Find the probability that among the 611 challenges, the number of overturned calls is exactly 172.

b. Of the 611 challenges, the number of 172 overturned calls is fewer than 30%. Find the probability that among the 611 challenges, the number of overturned calls is 172 or fewer. If the 30% rate is correct, is 172 overturned calls for 611 challenges an unusually low number?

c. Which result is useful for determining whether the 30% rate is correct: part (a) or part (b)? Explain.

d. Is there strong evidence to suggest that the rate of overturned calls is not 30%?

**View Solution:**## Answer to relevant Questions

Repeat the preceding exercise after changing the assumed rate of overturned calls from 30% to 33%. In preceding exercise, In the year that this exercise was written, there were 611 challenges made to referee calls in ...In a survey of 1002 people, 701 said that they voted in a recent presidential election (based on data from ICR Research Group). Voting records show that 61% of eligible voters actually did vote. Given that 61% of eligible ...A Boeing 767-300 aircraft has 213 seats. When someone buys a ticket for a flight, there is a 0.0995 probability that the person will not show up for the flight (based on data from an IBM research paper by Lawrence, Hong, and ...Listed below are the current salaries (in thousands of dollars) of players on the New York Yankees baseball team. a. Do these salaries appear to come from a population that has a normal distribution? Why or why not? b. Can ...For the poll described in Exercise, what do pn, qn, n, E, and p represent? If the confidence level is 95%, what is the value of a?Post your question