olve the following problems. Write your answer on your answer 1. You want to estimate the mean gasoline price within your error of 6 centavos. Local newspaper reports the standard the area is 24 centavos. What sample size is needed to esti at 90% confidence level? Daniel wants to replicate a study where the highest lowest

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Activity 5
Solve the following problems. Write your answer on your answer sheet.
1. You want to estimate the mean gasoline price within your town to the margin of
error of 6 centavos. Local newspaper reports the standard deviation for gas price in
the area is 24 centavos. What sample size is needed to estimate the mean gas prices
at 90% confidence level?
2. Daniel wants to replicate a study where the highest lowest observed value is 14.8
while the lowest is 12.4. He wants to estimate the population mean u to the margin
of error of 0.026 of its true value. Using 99% confidence level, find the sample size n
that he needs.
Transcribed Image Text:Activity 5 Solve the following problems. Write your answer on your answer sheet. 1. You want to estimate the mean gasoline price within your town to the margin of error of 6 centavos. Local newspaper reports the standard deviation for gas price in the area is 24 centavos. What sample size is needed to estimate the mean gas prices at 90% confidence level? 2. Daniel wants to replicate a study where the highest lowest observed value is 14.8 while the lowest is 12.4. He wants to estimate the population mean u to the margin of error of 0.026 of its true value. Using 99% confidence level, find the sample size n that he needs.
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