Question 17 (1 point) A new drug is prposed to lower total cholesterol and a study is designed to evaluate the efficacy of the drug. 17 patients agree to participate in the study and are asked to take the new drug for 6 weeks, Each patient's total cholesterol level is measured before (labelled an measurement 1) and after the six weeks (labelled as measurement 2) of taking the drug. Pairwise differences of (after-before) are calculated, and a hypothesis test is conducted to evaluate if the cholesterol level after taking the drug Is different from before taking the drug. Given that a p-value is calculated as 0.0867, what is the correct conclusion for this hypothesis test at the 5% significance level? The probability of observing an increase in cholesterol level after the drug is 0 0867 O Reject the null hypothesis, there is a decrease in cholesterol level after taking the drug Ful to reject the null hypothesis, there is no significant difference in cholesterol level after taking the drug. O Fail to reject the null hypothesis, there is no significant increase in cholesterol level after taking the drug Question 18 (1 point) A new drug is proposed to lower total cholesterol and a study is designed to evaluate the efficacy of the drug. 17 patients agree to participate in the study and are asland to take the now drug for & works. Each patient's total cholesterol level is measured before ilabelled as measurement 1) and after the six weeks (labelled as measurement 21 of taking the drug. Pairwise differences of (after before) are calculated, and a hypothesis test is conducted to evaluate if the cholesterol level after taking the drug is different from before taking the drug. Given that a p-value is calculated as 0:0122. what is the correct conclusion for this hypothesis best at the 5% significance level? O Fail to reject the null hypothesis, there is no significant difference in cholesterol level after taking the drug. Reject the null hypothesis, there is a significant difference in cholesterol level after taking the drug. )Reject the null hypothesis, there is a decrease in cholesterol level after taking the drug Fail to reject the null hypothesis, there is no significant decrease in cholesterol level after taking the drug Question 19 (1 point) Researchers examining differences in mean credit card debt between separate daves of students found that there were significant differences between the groups, In fact, there were no significant differences between the groups. What type of error, If any, was committed? O Type 1 No Error O Type 2 Question 20 [1 point) Researchers examining differences in mean scores on a reading comprehension exam given to students who declared separate majors found that there were no significant differences between the groups. In fact, there were significant differences between the groups. What type of error, If any. was committed? O Type 2 O Type 1 O No Error O
