Jane recently switched her primary doctor to one specializing in caring for elderly patients. On her new doctor's website, it says that the mean systolic blood pressure among elderly females is 115 millimeters of mercury (mmHg). Jane believes the value is actually higher. She bases her belief on a recently reported study of 22 randomly selected, elderly females. The sample mean systolic blood pressure was 121mmHg, and the sample standard deviation was 24 mmHg. Assume that the systolic blood pressures of elderly females are approximately normally distributed. Based on the study, at the 0.05 level of significance, can it be concluded that μ, the population mean systolic blood pressure among elderly females, is greater than 115 mmHg? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. a. State the null hypothesis H0 and the alternative hypothesis H1. b. Find the value of the test statistic. Round to three or more decimal places. c. Find the critical value. Round to three or more decimal places. d. Can it be concluded that the mean systolic blood pressure among elderly females is greater than 115 mmHg?
Jane recently switched her primary doctor to one specializing in caring for elderly patients. On her new doctor's website, it says that the
Carry your intermediate computations to three or more decimal places.
a. State the null hypothesis H0 and the alternative hypothesis H1.
b. Find the value of the test statistic. Round to three or more decimal places.
c. Find the critical value. Round to three or more decimal places.
d. Can it be concluded that the mean systolic blood pressure among elderly females is greater than 115 mmHg?
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