Mathematics, 31.03.2020 20:55 MoogleCaliS
The number of television sets produced daily from an assembly line is normally distributed with a mean of 430 sets and standard deviation of 20 sets. For 30 randomly selected days of the production line
(a) Construct a 95% confidence interval for the population mean number of sets per hour?
(b) What is margin of error used in (a)?
(c) What sample size should be taken so that a 95% confidence interval will have a margin of error less than 16 sets per day?
Answers: 2
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