The average length of a hospital stay in the US is µ = 9 days with standard deviation of σ = 3 days. Assume a simple random sample of 100 patients is obtained and the mean stay for 100 patients is obtained. a) State the condition(s) that the sample mean of hospital stays follows a normal distribution. b) What is the mean and standard deviation of the sampling distribution of the sample mean for samples of size 100. c) What is the probability to obtain a sample mean less than 9.6 days? Use Rguroo

The average length of a hospital stay in the US is µ = 9 days with standard deviation of σ = 3 days. Assume a simple random sample of 100 patients is obtained and the mean stay for 100 patients is obtained. a) State the condition(s) that the sample mean of hospital stays follows a normal distribution. b) What is the mean and standard deviation of the sampling distribution of the sample mean for samples of size 100. c) What is the probability to obtain a sample mean less than 9.6 days? Use Rguroo

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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