In a large hospital, a nursing director selected a random sample of 37 registered nurses and found that the mean of their ages was 32.9. The population standard deviation for the ages is 4.2. She selected a random sample of 28 nursing assistants and found the mean of their ages was 29.8. The population standard deviation of the ages for the assistants is 5.1. Find the 90% confidence interval of the differences in the ages. Use u, for the mean age of the registered nurses. olb Round the answers to one decimal place.

In a large hospital, a nursing director selected a random sample of 37 registered nurses and found that the mean of their ages was 32.9. The population standard deviation for the ages is 4.2. She selected a random sample of 28 nursing assistants and found the mean of their ages was 29.8. The population standard deviation of the ages for the assistants is 5.1. Find the 90% confidence interval of the differences in the ages. Use u, for the mean age of the registered nurses. olb Round the answers to one decimal place.

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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