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A study was carried out to assess the effect of a new medication in reducing blood pressure. In the trial, 59 subjects were enrolled, of which 30 were randomly allocated to receive a new treatment, while 29 received a control medication. After 20 weeks in the study, each subject's blood pressure, $X$, was measured, leading to the following summary statistics: $ar{x}_T = $ 9.63, $ar{x}_C = $ 9.79, $s_ p^2 = $ 1.41. With $ar{x}_T$ and $ar{x}_C$ representing the mean blood pressures in the treatment and control groups respectively, it is desired to test $H_0: mu_T = mu_C$ against $H_A: mu_T < mu_C$ .

Calculate the test statistic. 0.5174 [3 pt(s)] You are correct. Previous Tries Your receipt no. is 162-5483 Which of the statistical tables should you use? Incorrect X--distribution Correct: t-distribution Incorrect z-distribution [1 pt(s)] You are correct. Your receipt no. is 162-3914 Previous Tries How many degrees of freedom are associated with the test statistic? 57 [1 pt(s)] You are correct. Your receipt no. is 162-200 Previous Tries Is this a 1-sided or a 2-sided test? Incorrect 2-sided Correct: 1-sided [2 pt(s)] You are correct. Your receipt no. is 162-6880 Previous Tries Which interval in the table contains the p-value for the test? p-value S 0.005 0.005< p-value s 0.01 0.01 < p-value š 0.025 0.025 < p-value s 0.05 0.05 < p-value š 0.1 p-value > 0.1 [3 pt(s)] Submit Answer Tries 0/1

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vy 逆1: 0.3174 sided te P-walve so

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