Question 18 of 20 (1 point) | Question Attempt: 1 of 1 Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly is 115 millimeters of mercury (mmlig), but she believes that the actual value is higher. She bases her belief on a recently reported study of 12 randomly selected, elderly adults. The sample mean systolic blood pressure of the adults in the study was 129 mmlig, and the sample standard deviation was 22 mmlg. Assume that the population of systolic blood pressures of elderly adults is normally distributed. Based on the study, at the 0.05 level of significance, can it be concluded that , the mean systolic blood pressure among elderly adults, is greater than 115 mmlg? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the table, (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H1. O H D X S H :0 (b) Determine the type of test statistic to use. (Choose one) O-0 050 020 (c) Find the value of the test statistic. (Round to three or more decimal places.) 1 00 0 (d) Find the critical value. (Round to three or more decimal places.) X ? () Can it be concluded, at the 0.05 level of significance, that the mean systolic hlond pressure among elderly.adulte is greater than 1.1.5.mmHa2 Continue Save For Later Submit Assignment 2021 McGrow Hill Education. All Rights Reserved. Terms of Use | Pilvacy | Accessibility 2:05 PM