Question: Repeat the preceding exercise after changing the assumed rate of overturned calls from 25% to 22%. Preceding exercise In the year that this exercise was

Repeat the preceding exercise after changing the assumed rate of overturned calls from 25% to 22%.
Preceding exercise
In the year that this exercise was written, there were 879 challenges made to referee calls in professional tennis singles play. Among those challenges, 231 challenges were upheld with the call overturned. Assume that in general, 25% of the challenges are successfully upheld with the call overturned.
a. If the 25% rate is correct, find the probability that among the 879 challenges, the number of overturned calls is exactly 231.
b. If the 25% rate is correct, find the probability that among the 879 challenges, the number of overturned calls is 231 or more. If the 25% rate is correct, is 231 overturned calls among 879 challenges a result that is significantly high?

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