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Answer:
The 99% confidence interval of the standard deviation of the pulse rates of men is
Step-by-step explanation:
From the question we are told that
The sample size is n = 40
The mean is
The standard deviation is
Generally the degree of freedom is mathematically represented as
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From the question we are told the confidence level is 99% , hence the level of significance is
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Generally from the chi distribution table the critical value of at a degree of freedom of is
Generally from the chi distribution table the critical value of at a degree of freedom of is
Generally the 99% confidence interval of the standard deviation of the pulse rates of men is mathematically represented as
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