Question
The monthly incomes from a random sample of workers in a factory are shown below. Monthly Income (In $1,000) 6.0 7.0 6.0 7.0 9.0 a.
The monthly incomes from a random sample of workers in a factory are shown below.
Monthly Income
(In $1,000)
6.0
7.0
6.0
7.0
9.0
a.
Compute the margin of error (in dollars) at 95% confidence.
ANS
b.
Compute a 95% confidence interval for the mean of the population. Assume the population has a normal distribution. Give your answer in dollars
ANS
.
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Advanced Engineering Mathematics
Authors: ERWIN KREYSZIG
9th Edition
0471488852, 978-0471488859
