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Question 9 of 10 (1 point) | Question Attempt 1 of 1 Susan recently switched her primary doctor to one specializing in caring for elderly patients. On her new doctor's website, it says that the mean ystolic blood pressure among elderly females is 115 millimeters of mercury (mmllg). Susan believes the value is actually higher. She bases her belief on a recently reported study of 20 randomly selected, elderly females. The sample mean systolic blood pressure was 126 mmlig, and the sample standard deviation was 25 mily Assume that the systolic blood pressures of elderly females are approximately normally distributed. Based on the study, at the 0.10-level of significance, cat be concluded that, the population mean systolic blood pressure among elderly females, is greater than 115 mm Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a form) (a) State the null hypothesis H, and the alternative hypothesis H H₂=0 H₁:0 (b) Determine the type of test statistic to use. (c) Find the value of the test statistic. (Round to three or more decimal places) (d) Find the critical value. (Round to three or more decimal places) 0 (e) Can it be concluded that the mean systolic blood pressure among elderly females is greater than 115 mmig? Oves No 24 Y O S P 2 0+0 00 Did 0-0 0-0 0-0 X 5 ?

A coin-operated drink machine was designed to discharge a mean of 6 fluid ounces of coffee per cup. In a test of the machine, the discharge amounts in 21 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 6.12 fuld ounces and 0.21 fud ounces, respectively. If we assume that the discharge amounts are approximately normally distributed, is there enough evidence, to conclude that the population medischarge differs from 6 fluid ounces? Use the 0.05 level of significance Perform a two-tailed test. Then complete the parts below Carry your intermediate computations to three or more decimal places. ( necessary, constat (a) State the null hypothesis , and the alternative hypothesis HD HO (b) Determine the type of test static to use (Choose one) (c) Find the value of the test statistic (Round to three or more decimale) 0 (d) Find the value (Round to three or more decimal places) 0 (e) Can we canclude that the mean discharge differs from 6 fluid unces? H x 0 P A A Co D-D DID ND C+0+0+ K b 9