The standard deviation of monthly rents paid by students in a particular city is assumed to be $ 40. a) If a random sample of 100 students is taken, the sample mean must be at least $ 5 higher than the population average what is the probability? b) If a random sample of 100 students is taken, the sample mean must be at least $ 4 lower than the population mean what is the probability? c) The probability that the difference between the sample mean and the population mean (negative and positive total) is $ 2 is less than 0.01. What should be the sample size to be small

The standard deviation of monthly rents paid by students in a particular city is assumed to be $ 40. a) If a random sample of 100 students is taken, the sample mean must be at least $ 5 higher than the population average what is the probability? b) If a random sample of 100 students is taken, the sample mean must be at least $ 4 lower than the population mean what is the probability? c) The probability that the difference between the sample mean and the population mean (negative and positive total) is $ 2 is less than 0.01. What should be the sample size to be small

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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