2) The following data represent the number of passengers per flight in a random sample of 20 flights from Vienna, Austria, to Cluj-Napoca, Romania, with a new airline: 83 70 96 74 28 63 64 94 37 95 48 80 52 48 52 38 47 79 65 25 a) Find a 99% confidence interval for the mean number of passengers per flight. b) Find a 95% confidence interval for the population standard deviation.

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2) The following data represent the number of passengers per flight in a random sample of 20
flights from Vienna, Austria, to Cluj-Napoca, Romania, with a new airline:
96
95
70
74
28
63
64
94
37
83
25
48
80
52
48
52
38
47
79
65
a) Find a 99% confidence interval for the mean number of passengers per flight.
b) Find a 95% confidence interval for the population standard deviation.
Transcribed Image Text:2) The following data represent the number of passengers per flight in a random sample of 20 flights from Vienna, Austria, to Cluj-Napoca, Romania, with a new airline: 96 95 70 74 28 63 64 94 37 83 25 48 80 52 48 52 38 47 79 65 a) Find a 99% confidence interval for the mean number of passengers per flight. b) Find a 95% confidence interval for the population standard deviation.
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