You are the manager of a local cinema, and want to investigate how much the average customer spends on the concession stand. You take a sample of 20 customers, and you find a sample average of $11.20, with a sample standard deviation of 3.55. Using this information, you want to create a 90% confidence interval around the population mean. What is the lower bound (lower end) of the confidence interval in of your analysis? Note: 1- Do not round intermediate numbers. Round your final answer to two decimal places.

You are the manager of a local cinema, and want to investigate how much the average customer spends on the concession stand. You take a sample of 20 customers, and you find a sample average of $11.20, with a sample standard deviation of 3.55. Using this information, you want to create a 90% confidence interval around the population mean. What is the lower bound (lower end) of the confidence interval in of your analysis? Note: 1- Do not round intermediate numbers. Round your final answer to two decimal places.

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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