An investigator polls a representative sample of common cold sufferers, asking them to estimate the number of hours of physical discomfort caused by their most recent cold. Their estimates approximate a normal curve with a mean of 91 hours and a standard deviation of 23 hours. Show your z-score and p-value calculations. (1) Inverse Normal Distribution: What is the estimated number of hours for the shortest-suffering 20 percent?(1) Inverse Normal Distribution: A medical researcher wishes to concentrate on the 10 percent who suffered the most. To be included in this group, a patient would have suffered how many hours?

Given : An estimates approximate a normal curve with a mean of 91 hours and a standard deviation of…

Answered: An investigator polls a representative…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 22SGR

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An investigator polls a representative sample of common cold sufferers, asking them to estimate the number of hours of physical discomfort caused by their most recent cold. Their estimates approximate a normal curve with a mean of 91 hours and a standard deviation of 23 hours. Show your z-score and p-value calculations.
(1) Inverse Normal Distribution: What is the estimated number of hours for the shortest-suffering 20 percent?
(1) Inverse Normal Distribution: A medical researcher wishes to concentrate on the 10 percent who suffered the most. To be included in this group, a patient would have suffered how many hours?

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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