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