Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 41, with a standard devlation of 28. A pollster draws a sample of 92 people to interview. Part 1 of 5 (a) What is the probability that the sample mean income is less than 37? Round the answer to at least four decimal places. The probability that the sample mean income is less than 37 is Part 2 of 5 (b) What is the probability that the sample mean income is between 38 and 45? Round the answer to at least four decimal places. The probability that the sample mean income is between 38 and 45 is
Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 41, with a standard devlation of 28. A pollster draws a sample of 92 people to interview. Part 1 of 5 (a) What is the probability that the sample mean income is less than 37? Round the answer to at least four decimal places. The probability that the sample mean income is less than 37 is Part 2 of 5 (b) What is the probability that the sample mean income is between 38 and 45? Round the answer to at least four decimal places. The probability that the sample mean income is between 38 and 45 is
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
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Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 41, with a standard deviation of
28. A pollster draws a sample of 92 people to interview. Answer the three following questions.
Transcribed Image Text:Part 3 of 5
(c) Find the 80th
percentile of the sample mean. Round the answer to at least one decimal place.
The 80th
percentile of the sample mean is
Transcribed Image Text:Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 41, with a standard devlation of
28. A pollster draws a sample of 92 people to interview.
Part 1 of 5
(a) What is the probability that the sample mean income is less than 37? Round the answer to at least four decimal places.
The probability that the sample mean income is less than 37 is
Part 2 of 5
(b) What is the probability that the sample mean income is between 38 and 45? Round the answer to at least four decimal
places.
The probability that the sample mean income is between 38 and 45 is
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