q biostat - medplus254

[ArchivalUser]

8. You are reading an article detailing a study designed to compare the average body mass index among hypertensive individuals (persons with high blood pressure) to normotensive individuals. The study was conducted using participants in a health plan offered by a large insurance carrier. 200 randomly selected hypertensive participants were compared to 200 randomly selected normotensive participants. The study reports a 95% confidence interval (CI) for the mean difference in BMI between hypertensives and normotensives. The 95% CI is (0.15 kg/m, 2.43 kg/m). However, no p-value is reported for testing the null hypothesis of no mean difference in BMI between the two groups (a mean difference of 0 kg/mg) versus the alternative of a non-zero mean difference. Luckily, you have taken this biostat course, so you are able to determine:
a.the p-value is < .05
b.the p-value is > .05
c.the p-value is exactly .05.
d.the p-value is exactly .009
e.None of the above.

[ArchivalUser]

The answer is a

[ArchivalUser]

explain lpz

[ArchivalUser]

if CI contains zero then it is not significant and you do not reject H0 meaning there is no difference between 2 groups.

here CI IS 0.15 -2.43 HENCE ITIS statistically significant and hence p value