Determine the value of the finite population correction, Ask an Expert

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Q1) Fuel efficiency of cars in Motorville (measured in miles per hours) is of interest to you. It is known the variable has Normal probability distribution. You choose a random

Sample of 20 cars and obtain the following results: x‾= 26.8 s= 2.4

a) Calculate a 95% confidence interval for the population mean, µ

b) Calculate a 90% confidence interval for µ.

Q2) Determine the value of the finite population correction factor if population size is 1000 and the sample size is 300? What is the smallest sample size for which finite population correction factor must be Used?

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