people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $48 and sample standard deviation of $20. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place.

people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $48 and sample standard deviation of $20. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 9PPS

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Question

In a survey, 27 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $48 and sample standard deviation of $20. Construct a confidence interval at a 98% confidence level.

Give your answers to one decimal place.

Expert Solution