Answered: At a certain medical clinic new…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 3GP

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At a certain medical clinic new patients are weighed when they join the clinic. During the last five years, the patients’ weights have been normally distributed with mean 74 kg and standard deviation 6.4 kg This year, a random sample of 92 new patients were weighed and their mean weight was 75.4 kg. Assuming that the standard deviation has not changed, test at the 5% level whether there is evidence that the mean weight of the new patients has increased compared to previous patients.

can you solve this question by showing it step by step for the calculations? thanks in advance

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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