Cost of an Operation A medical researcher surveyed 13 hospitals and found that the standard deviation for the cost for removing a person's gall bladder was $55. Assume the variable is normally distributed. Based on this, find the 99% confidence intervals of the population variance and standard deviation. Round the answers to two decimal places.

Cost of an Operation A medical researcher surveyed 13 hospitals and found that the standard deviation for the cost for removing a person's gall bladder was $55. Assume the variable is normally distributed. Based on this, find the 99% confidence intervals of the population variance and standard deviation. Round the answers to two decimal places.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 3CYU

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Question

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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