Confidence interval and margin of error

Reference no: EM1386266

A customer wants to estimate the average delivery time of a pizza from the local pizza parlor. Over the course of a few months, the customer orders 29 pizzas and records the delivery times. The average delivery time is 26.7 with a standard deviation of 8.527. If the customer estimates the time using a 99% confidence interval, what is the margin of error?

1) 0.9014

2) 4.3754

3) 4.3645

4) 1.5834

5) 3.9065

Reference no: EM1386266

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