Question

Hosted by ALEKS Corp. Homework 9 1 2 3 4 5 6 7 8 9 10 > Question 10 of 10 (1 point) | Attempt 1 of Unlimited | View question in a popup 11.3 Section Exercise 9 (p-value, calc) Crossover trial: A crossover trial is a type of experiment used to compare two drugs. Subjects take one drug for a period of time, then switch to the other. The responses of the subjects are then compared using matched-pair methods. In an experiment to compare two pain relievers, seven subjects took one pain reliever for two weeks, then switched to the other. They rated their pain level from 1 to 10, with larger numbers representing higher levels of pain. The results are listed below. Can you conclude that the mean pain level is more with drug B? Let , represent the mean pain level with drug A and u d = \, -42. Use the a = 0.01 level and the P-value method with the TI-84 Plus calculator. Subject 1 2 3 4 5 6 7 4 5 2 6 2 1 Drug A Drug B 7 4 4 7 4 7 ille Send data to Excel Part: 0 / 4

Answer 1

Excel: Data --> Data analysis -->t-Test: Paired Two Sample for Means A B с E F H 1 A B ? x 2 4 1 t-Test: Paired Two Sample for Means Input Variable 1 Range: $A$2:$A$8 Variable 2 Range: $B$2:$B$8 OK Cancel 3 5 7 Help 4 2 4 d Hypothesized Mean Difference: Labels Alpha: 0.05 5 6 4 6 1 7 7 2 4 Output options Output Range: New Worksheet Ply: New Workbook 8 1 7 o Output: t-Test: Paired Two Sample for Means Variable 1 Variable 2 Mean 3 4.857143 Variance 4 5.142857 Observations 7 7 Pearson Correlation -0.33072 Hypothesized Mean Difference df 6 t Stat -1.41005 P(T<=t) one-tail 0.1041 t Critical one-tail 1.94318 P(T<=t) two-tail 0.208199 t Critical two-tail 2.446912 Ans: P-value = 0.1041