Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Past experience indicates that the variance in the time it takes for a fast lube operation to actually complete the lube and change for customers
Past experience indicates that the variance in the time it takes for a "fast lube" operation to actually complete the lube and change for customers is 9.00 minutes. The manager wishes to estimate the mean time with 99 percent confidence and a margin of error of plus or minus 0.50 minutes. Given this, what must the sample size be?
a) n = 1245
b) b=239
c) n=2149
d) n=139
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started