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Problem: The time it takes to give a man a shampoo and haircut is normally distributed with mean 22 minutes and standard deviation 3 minutes. Customers are scheduled every 30 minutes.
Required:
(a) What is the probability that a male customer will take longer than the allotted time? (Round your answer to 4 decimal places.)
(b) If three male customers are scheduled sequentially on the half-hour, what is the probability that all three will be finished within their allotted half-hour times? (Round your answer to 4 decimal places.)
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What is Correlation and How to Interpret the Values of Correlations
Determine the number of degrees of freedom for the two-sample t test or CI in each of the following situations:
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