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A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 95% confidence that the mean of her sample is off by at most 0.6 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.6 minutes, now large the sample will she have to take? O 28 O 20 O 19 O 27

A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 95% confidence that the mean of her sample is off by at most 0.6 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.6 minutes, now large the sample will she have to take? O 28 O 20 O 19 O 27

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
Section: Chapter Questions
Problem 25SGR
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WELCOME TO CLD TRAFFORD poard emaining Time: 1 hour, 55 minutes, 52 seconds. uestion Completion Status: Increasea by 1.4 Times QUESTION 22 A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 95% confidence of her sample is off by at most 0.6 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.6 minutes, how large the sample will she have to take? the mean O 28 O 20 O 19 O 27 QUESTION 23 Given the following information Ex? = 771.35 n= 10, Ey = 88.8, Ey = 819.34, Ex= 86.7, The slope of the regression line of y on x is: Exy = 792.92 O 1.151 O 1.171 O 1.222 O 0.996
Transcribed Image Text:WELCOME TO CLD TRAFFORD poard emaining Time: 1 hour, 55 minutes, 52 seconds. uestion Completion Status: Increasea by 1.4 Times QUESTION 22 A research worker wants to determine the average time it takes a mechanic to rotate the tires of a car, and she wants to be able to assert with 95% confidence of her sample is off by at most 0.6 minutes. If she can presume from past experience that the actual time follows normal distribution with a standard deviation of 1.6 minutes, how large the sample will she have to take? the mean O 28 O 20 O 19 O 27 QUESTION 23 Given the following information Ex? = 771.35 n= 10, Ey = 88.8, Ey = 819.34, Ex= 86.7, The slope of the regression line of y on x is: Exy = 792.92 O 1.151 O 1.171 O 1.222 O 0.996
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