The actual voltages of power packs labelled as 12 volts are as follows:11.7711.9011.6411.8412.1311.9911.77a.Calculate the mean voltage in these packs.b.Determine a point estimate for the population variance voltage.C.Construct and interpret a 98% confidence interval for the true voltage in thesepacks.

When we have larger population and for that population, a sample has been taken then using the…

Answered: The actual voltages of power packs…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Assume that human body temperatures are normally distributed with a mean of 98.23°F and a standard deviation of 0.61°F. a. A hospital uses 100.6°F as the lowest temperature considered to be a fever. What percentage of normal and healthy persons would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6°F is appropriate? b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 5.0% of healthy people to exceed it? (Such a result is a false positive, meaning that the test result is positive, but the subject is not really sick.) Click to view nage 1 of the table
Assume that human body temperatures are normally distributed with a mean of 98.23°F and a standard deviation of 0.62°F. a. A hospital uses 100.6°F as the lowest temperature considered to be a fever. What percentage of normal and healthy persons would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6°F is appropriate? b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 5.0% of healthy people to exceed it? (Such a result is a false positive, meaning that the test result is positive, but the subject is not really sick.) Click to view page 1 of the table. Click to view page 2 of the table. a. The percentage of normal and healthy persons considered to have a fever is %. (Round to two decimal places as needed.)
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The level of cretaine phosphokinase (CPK) in blood samples measures the amount of muscle damage for athletes. At Jock State University, the level of CPK was determined for each of 25 football players and 15 soccer players before and after practice. The two groups of athletes are trained independently. The data summary is as follows : n=25 Before Practice After Practice Difference (Before-After) Mean 254.73 225.6 29.13 Standard deviation 115.5 132.6 21.00 n=15 Before Practice After Practice Difference (Before-After) Mean 177.1 173.8 3.3 Standard deviation 60.7 64.4 6.88 After practice, do foortball players have different mean CPK values compared to soccer players? Test this claim by performing a hypothesis test, using α=0.10.
Assume that human body temperatures are normally distributed with a mean of 98.19°F and a standard deviation of 0.62°F. a. A hospital uses 100.6°F as the lowest temperature considered to be a fever. What percentage of normal and healthy persons would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6°F is appropriate? b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 5.0% of healthy people to exceed it? (Such a result is a false positive, meaning that the test result is positive, but the subject is not really sick.) Click to view page 1 of the table. Click to view page 2 of the table. a. The percentage of normal and healthy persons considered to have a fever is. (Round to two decimal places as needed.)
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i.
Assume a normal distribution with known population variance. Calculate the confidence interval (LCL and UCL) for each of the following. a. ?̅= 510, ? = 485, ? = 50, ? = 0.10 b. ?̅= 85, ? = 150, ?2 = 225, ? = 0.01
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Consider a sample with data values of 10, 40, 60, 80, 90. Compute the standard deviation. Select one: O a. 56 ОБ. 824 O c. 1030 O d. 28.71 Ое. 32.09

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