Mean time between billing and receipt of payment

Reference no: EM131026349

The length of time between billing and receipt of payment was recorded for a random sample of 100 of a certified public accountant (CPA) firm's clients. The sample mean and standard deviation for the 100 accounts were 39.1 days and 17.3 days, respectively. Find a 90% confidence interval for the mean time between billing and receipt of payment for all of the CPA firm's accounts. Interpret the interval.

Reference no: EM131026349

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