Mathematics, 19.02.2020 21:29 PAADUUUgma
The mean and the standard deviation of the sample of 100 bank customer waiting times in Table 1.8 are (xbar=5.46) and s=2.475.
(1)Calculate a t-based 95 percent confidence interval for U, the mean of all possible bank customer waiting times using the new system.
(2)Are we 95 percent confident that U is less than six minutes?
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The mean and the standard deviation of the sample of 100 bank customer waiting times in Table 1.8 ar...
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