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The required sample size equals:

The required sample size equals:

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question 15 of 28 A marketing consultant is hired by a major restaurant chain wishing to investigate the preferences and spending patterns of lunch customers. The CEO of the chain hypothesized that the average customer spends at least $13.50 on lunch. A survey of 25 customers sampled at one of the restaurants found the average lunch bill per eustomer to be $14.50. Based on previous surveys, the restaurant informs the marketing manager that the standard deviation is o = $3.50. To address the CEO's conjecture, the marketing manager carried out a hypothesis test of Ho # = 13,50 vs. H, # > 13.50 and obtained a Pvalue= 0.077, To illustrate his results, the direetor also wanted to ealeulate a 95% confidence interval with a margin of GTOF m = $1.00. The required sample size equals: 25. 100. 30. 48.
Transcribed Image Text:Question 15 of 28 A marketing consultant is hired by a major restaurant chain wishing to investigate the preferences and spending patterns of lunch customers. The CEO of the chain hypothesized that the average customer spends at least $13.50 on lunch. A survey of 25 customers sampled at one of the restaurants found the average lunch bill per eustomer to be $14.50. Based on previous surveys, the restaurant informs the marketing manager that the standard deviation is o = $3.50. To address the CEO's conjecture, the marketing manager carried out a hypothesis test of Ho # = 13,50 vs. H, # > 13.50 and obtained a Pvalue= 0.077, To illustrate his results, the direetor also wanted to ealeulate a 95% confidence interval with a margin of GTOF m = $1.00. The required sample size equals: 25. 100. 30. 48.
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