Suppose that a sample of 39 employees at a large company were surveyed and asked how many hours a week they thought the company wasted on unnecessary meetings. The mean number of hours these employees stated was 12.4 with a standard deviation of 5.1. Calculate a 99% confidence interval to estimate the mean amount of time all employees at this company believe is wasted on unnecessary meetings each week. (hint: population standard deviation is unknown)
Added by William P.
Step 1
We are given the sample mean ($\bar{x}$), sample standard deviation ($s$), and sample size ($n$). In this case, $\bar{x} = 12.4$, $s = 5.1$, and $n = 39$. Show more…
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