) Find the probability that the length of time a person shows flu symptoms is at most 9 days. ) Find the probability that, in a sample of 37 people, the average length of time the people show flu ymptoms is between 6.3 and 7 days. ) Find the probability that, in a sample of 9 people, the average length of time the people show flu ymptoms is at least 5.2 days. Assume that the data is normally distributed.

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2. Suppose that the mean length of time a person shows flu symptoms is 7.2 days with a standard
deviation of 1.8 days.
a) Find the probability that the length of time a person shows flu symptoms is at most 9 days.
b) Find the probability that, in a sample of 37 people, the average length of time the people show flu
symptoms is between 6.3 and 7 days.
c) Find the probability that, in a sample of 9 people, the average length of time the people show flu
symptoms is at least 5.2 days. Assume that the data is normally distributed.
Transcribed Image Text:2. Suppose that the mean length of time a person shows flu symptoms is 7.2 days with a standard deviation of 1.8 days. a) Find the probability that the length of time a person shows flu symptoms is at most 9 days. b) Find the probability that, in a sample of 37 people, the average length of time the people show flu symptoms is between 6.3 and 7 days. c) Find the probability that, in a sample of 9 people, the average length of time the people show flu symptoms is at least 5.2 days. Assume that the data is normally distributed.
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