The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dL...

 

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The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dL and a variance, o, of 495. Some researchers claim that the variance of cholesterol levels of adult males is less than 495. A sample of 17 adult males' blood tests had a mean of 223 mg/dL and a variance of 274. Is there enough evidence to conclude, at the 0.05 level of significance, that the variance of cholesterol levels of adult males is less than 495? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: H. The alternative hypothesis: H, :0 D=D OSO The type of test statistic: (Choose one) v O<O The value of the test statistic: (Round to at least three decimal places.) The critical value at the 0.05 level of significance: (Round to at least three decimal places.) Can we support the claim that the variance of cholesterol levels of adult males is less than 495? Yes No Activate Go to Sett |x The cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dL and a variance, o, of 495. Some researchers claim that the variance of cholesterol levels of adult males is less than 495. A sample of 17 adult males' blood tests had a mean of 223 mg/dL and a variance of 274. Is there enough evidence to conclude, at the 0.05 level of significance, that the variance of cholesterol levels of adult males is less than 495? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: H. The alternative hypothesis: H, :0 D=D OSO The type of test statistic: (Choose one) v O<O The value of the test statistic: (Round to at least three decimal places.) The critical value at the 0.05 level of significance: (Round to at least three decimal places.) Can we support the claim that the variance of cholesterol levels of adult males is less than 495? Yes No Activate Go to Sett |x