Mathematics, 03.08.2021 15:50 harleyguerrieri
A random sample of 81 students at a local university showed that they work an average of 100 hours per month. The population standard deviation is known to be 27 hours.
Required:
a. Compute a 95% confidence interval for the mean of the population.
b. What is the margin of error?
Answers: 2
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