A study reported that in a sample of 104 people who watch television news, 35 ha
ID: 3316029 • Letter: A
Question
A study reported that in a sample of 104 people who watch television news, 35 had elevated diastolic blood pressure levels (in millimeters of mercury, or mmHg). In a sample of 74 people do not watch television news, 20 had elevated diastolic blood pressure levels.
Can you conclude that the proportion of people with elevated diastolic blood pressure levels differs between news-watchers and those who do not watch news? Use the 0.05 level of significance.
Calculate the P-value. Round to the nearest ten thousandth.
Explanation / Answer
The statistical software output for this problem is:
Two sample proportion summary hypothesis test:
p1 : proportion of successes for population 1
p2 : proportion of successes for population 2
p1 - p2 : Difference in proportions
H0 : p1 - p2 = 0
HA : p1 - p2 0
Hypothesis test results:
Hence,
P - value = 0.34568
Difference Count1 Total1 Count2 Total2 Sample Diff. Std. Err. Z-Stat P-value p1 - p2 35 104 20 74 0.066268191 0.070273465 0.94300446 0.34568Related Questions
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