(Solved): (4 points) A doctor wants to test whether a drug has a negative side effect on the human body that ...

(4 points) A doctor wants to test whether a drug has a negative side effect on the human body that increases the heart rate. A random sample of 8 patients who used the drug showed mean heart rate of 83 beats per minute. However, a normal mean heart rate of all adults is 80 beats per minute with a standard deviation of 4.5 beats per minute. Do the sample data provide sufficient evidence to conclude that the drug increases the heart rate? Part A Let u be the mean heart rate of 8 randomly selected patients who use the drug . State the null and alternative hypotheses. Ho? + 80 Ha:? 80 Part B Determine the test statistic. 0.9 (Round the test statistic to 6 decimal places) Part C Determine the p-value. (Round the p-value to 4 decimal places) Part D At the 1% significance level, what can you conclude? Since the p-value ? ? than the significance level, we ? ? . At the 1% significance level, there is ? ? to conclude that the mean heart rate of ? ? ? beats per minute.