Question
A random sample of 49 scores on a test reports a mean of 73 units. It is known the standard deviation of the population of
A random sample of 49 scores on a test reports a mean of 73 units. It is known the standard deviation of the population of scores is 14 units. Indicate the margin of error added and subtracted from the sample mean when calculating a 95% confidence interval.
3.290
0.560
0.050
3.920
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Advanced Engineering Mathematics
Authors: ERWIN KREYSZIG
9th Edition
0471488852, 978-0471488859
