Answered: It is known that the overall job…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter12: Angle Relationships And Transformations

Section12.1: Angle Relationships

Problem 44E

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It is known that the overall job satisfaction (score range 0-10) of professors follows a normal distribution. The job satisfaction of 16 SUNY professor shows blow using a histogram.

1) Calculate the 95% CI to estimate the average job satisfaction level of the professor population and interpret the 95% CI.

2) List two ways that you could use to get a narrower confidence level. Which way is better? Why?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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