Answered: What is the appropriate conclusion? 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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Question

A medical researcher wants to examine the relationship of the blood pressure of patients before and after a procedure. She takes a sample of people and measures their blood pressure before undergoing the procedure. Afterwards, she takes the same sample of people and measures their blood pressure again. The researcher wants to test if the blood pressure measurements after the procedure are different from the blood pressure measurements before the procedure. The hypotheses are as follows: Null Hypothesis: μ_D = 0, Alternative Hypothesis: μ_D ≠ 0. From her data, the researcher calculates a p-value of 0.8011. What is the appropriate conclusion? The difference was calculated as (after - before).

Question 13 options:

1)	We did not find enough evidence to say there was a significantly positive average difference in blood pressure.

2)	We did not find enough evidence to say the average difference in blood pressure was not 0.

3)	The average difference in blood pressure is significantly different from 0. The blood pressures of patients differ significantly before and after the procedure.