In a study of pulse rates of men, a simple random sample of 150 men results in a standard deviation of 11.4 beats per minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.05 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute; see the accompanying StatCrunch display for this test. What do the results indicate about the effectiveness of using the range rule of thumb with the "normal range" from 60 to 100 beats per minute for estimating o in this case? Assume that the simple random sample is selected from a normally distributed population. Click the icon to view the StatCrunch display. Let o denote population standard deviation of the pulse rates of men (in beats per minute). Identify the null and alternative hypotheses. Ho: o H₁:0 # 10 (Type integers or decimals. Do not round.) Identify the test statistic. = 10 ... (Round to two decimal places as needed.)
In a study of pulse rates of men, a simple random sample of 150 men results in a standard deviation of 11.4 beats per minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.05 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute; see the accompanying StatCrunch display for this test. What do the results indicate about the effectiveness of using the range rule of thumb with the "normal range" from 60 to 100 beats per minute for estimating o in this case? Assume that the simple random sample is selected from a normally distributed population. Click the icon to view the StatCrunch display. Let o denote population standard deviation of the pulse rates of men (in beats per minute). Identify the null and alternative hypotheses. Ho: o H₁:0 # 10 (Type integers or decimals. Do not round.) Identify the test statistic. = 10 ... (Round to two decimal places as needed.)
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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Transcribed Image Text:One sample variance hypothesis test:
02: Viance of variable
Ho : σ² = 100
HA: 0² # 100
Hypothesis test results:
Variable Sample Var. DF Chi-Square Stat P-value
PULSE
130.15685 149
193.93370
0.0156
Print
Done
Transcribed Image Text:In a study of pulse rates of men, a simple random sample of 150 men results in a standard deviation of 11.4 beats per
minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of
thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results
with a 0.05 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per
minute; see the accompanying StatCrunch display for this test. What do the results indicate about the effectiveness of
using the range rule of thumb with the "normal range" from 60 to 100 beats per minute for estimating o in this case?
Assume that the simple random sample is selected from a normally distributed population.
Click the icon to view the StatCrunch display.
Let o denote population standard deviation of the pulse rates of men (in beats per minute). Identify the null and
alternative hypotheses.
Ho: o
H₁: o # 10
(Type integers or decimals. Do not round.)
Identify the test statistic.
= 10
(Round to two decimal places as needed.)
example
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