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6. A marketing researcher wants to find a 96% confidence interval for the mean amount that visitors to a theme park spend per person per day. She knows that the standard deviation is $11. How large of a sample should the researcher select so that the estimate will be within $2 of the population mean? Round your answer up to the nearest integer. sample size =

6. A marketing researcher wants to find a 96% confidence interval for the mean amount that visitors to a theme park spend per person per day. She knows that the standard deviation is $11. How large of a sample should the researcher select so that the estimate will be within $2 of the population mean? Round your answer up to the nearest integer. sample size =

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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6. A marketing researcher wants to find a 96% confidence interval for the mean amount that visitors to a theme park spend per person per day. She knows that the standard deviation is $11. How large of a sample should the researcher select so that the estimate will be within $2 of the population mean? Round your answer up to the nearest integer. sample size %3D
Transcribed Image Text:6. A marketing researcher wants to find a 96% confidence interval for the mean amount that visitors to a theme park spend per person per day. She knows that the standard deviation is $11. How large of a sample should the researcher select so that the estimate will be within $2 of the population mean? Round your answer up to the nearest integer. sample size %3D
Expert Solution
Step 1

Given,

Margin error = 2

Standard deviation = 11

 

Critical value:

Using z-table, the z-critical value at the given significance level of α = 0.04 is,

Statistics homework question answer, step 1, image 1

 

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