A pharmaceutical company tested the impact of four cholesterol-reducing medications(denoted A, B, C and D) on people at high risk of heart attack. For this clinical trial20 volunteers with LDL (bad) cholesterol levels of 140 mg/dl were randomly assigned toone of the four medications. The subjects were instructed to take one tablet per dayfor a period of three months after which their LDL levels were again measured. Beloware the amounts (in mg/dl) by which the LDL levels decreased after the three month trial.Medication A Medication B Medication C Medication D2931303130.5303231.530.53231.75353129.7527332931.53329(d) What assumptions are needed to make this test valid?(e) If a key assumption in (d) is not satisfied, test if the data provide sufficient ev-idence to indicate that at least one of the medications produces a mean reduc-tion in LDL cholesterol that is different from any of the other medications usinga non-parametric method (show all working and include appropriate hypothesisstatements).(f) Test if there is any significant difference in the mean reduction in LDL cholesterolusing Medication A compared with Medication D (show all working and includeappropriate hypothesis statements).

The assumptions needed for the test in part (c) are:Observations in each of the four groups…

Answered: A pharmaceutical company tested the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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