Amedical researcher is interested in determining if there is a relationship between adults over 50 who walk regularly and low, moderate, and high blood pressure. a random sample of 236 adults over 50 is selected and the results are given below. test the claim that walking and low, moderate, and high blood pressure are independent. use a = 0.01.

blood pressure low moderate high

walkers 35 62 25

non-walkers 21 65 28

Since p > 0.01 we accept H0 that walking and  low, moderate, and high blood pressure are independent. at a = 0.01.

Step-by-step explanation:

Given that a medical researcher is interested in determining if there is a relationship between adults over 50 who walk regularly and low, moderate, and high blood pressure.

A random sample of 236 adults over 50 is selected and the results are given below.

We have to test chi square test of independence between levels of blood pressure and walking exercise

H0: There is no difference between means of walkers and non walkers

Ha: There is difference

(Two tailed chi square test at 1% level of significance)

Chi square contingency table    

BPLowModerateHigh  

Walkers356225122

Non walkers216528114

5612753236

Expected    

Walkers28.9491525465.6525423727.39830508122

Non walkers27.0508474661.3474576325.60169492114

5612753236

Chi square0.176093321    

df2    

p value0.915718148    

Since p > 0.01 we accept H0 that walking and  low, moderate, and high blood pressure are independent. at a = 0.01.

b

step-by-step explanation:

9987

step-by-step explanation: