In a study on sodium-restricted diets, the researchers observed 50 patients with hypertension. Among these, 22 were on sodium-restricted diets. Of 200 patients without hypertension, 54 were on sodium-restricted diets. The researchers were curious to find out whether they can conclude that, in the sampled population, the proportion of patients on sodium-restricted diets is higher among patients with hypertension (p1) than among patients without hypertension (p2). Use a significance level of α = 0.05 for the test. The output of the analysis is given below. Z Test for Two Proportions Hypertension No hypertension Sample Proportion xxx xxx Number of Observations 50 200 Ho: xxx Ha: xxx Z* xxx P[Z > Z*] XXXXX Z Critical, a = 0.05 1.644854 1. Assume the calculated test statistic turns out to be 3.54. Then, the conclusion is that we should reject Ho. 2. What is the null hypothesis
In a study on sodium-restricted diets, the researchers observed 50 patients with hypertension. Among these, 22 were on sodium-restricted diets. Of 200 patients without hypertension, 54 were on sodium-restricted diets. The researchers were curious to find out whether they can conclude that, in the sampled population, the proportion of patients on sodium-restricted diets is higher among patients with hypertension (p1) than among patients without hypertension (p2).
Use a significance level of α = 0.05 for the test. The output of the analysis is given below.
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Z Test for Two Proportions |
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Hypertension |
No hypertension |
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Sample Proportion |
xxx |
xxx |
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Number of Observations |
50 |
200 |
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Ho: xxx |
Ha: xxx |
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Z* |
xxx |
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P[Z > Z*] |
XXXXX |
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Z Critical, a = 0.05 |
1.644854 |
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1. Assume the calculated test statistic turns out to be 3.54. Then, the conclusion is that we should reject Ho.
2. What is the null hypothesis?
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