Q24 Shamma computed a confidence interval for the mean pH level of bottled water in UAE based on a sample of 50 bottles. She forgot the confidence level she used but still remembers that the critical value she used was 2.861. Which confidence level has Shamma used? 99.6% 95% 90% 99%

Q24 Shamma computed a confidence interval for the mean pH level of bottled water in UAE based on a sample of 50 bottles. She forgot the confidence level she used but still remembers that the critical value she used was 2.861. Which confidence level has Shamma used? 99.6% 95% 90% 99%

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 13PPS

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Question

Q24

Shamma computed a confidence interval for the mean pH level of bottled water in UAE based on a sample of 50 bottles. She forgot the confidence level she used but still remembers that the critical value she used was 2.861. Which confidence level has Shamma used?

99.6%

95%

90%

99%

Expert Solution