Mathematics, 29.11.2019 00:31 ltuthill
Apublisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. to determine this estimate, the publisher takes a random sample of 15 people and obtains the following results:
11, 9, 8, 10, 10, 9, 7, 11, 11, 7, 6, 9, 10, 8, 10
assume that the population of times is normally distributed.
a. find the point estimate of the population mean.
b. construct the 95% confidence interval for the mean population length reading time and interpret it.
c. what is the margin of error?
d. how can we reduce the margin of error?
Answers: 2
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Apublisher wants to estimate the mean length of time (in minutes) all adults spend reading newspaper...
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