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In: Statistics and Probability

A researcher wishes to determine whether the systolic blood pressure of people who follow a vegetarian...

  1. A researcher wishes to determine whether the systolic blood pressure of people who follow a vegetarian diet is, on average, lower than the systolic blood pressure of those who do not follow a vegetarian diet. Independent simple random samples of 85 vegetarian and 75 nonvegetarians yielded the following sample statistics:

Vegetarians

Nonvegetarians

Mean = 124.1

Mean = 138.7

s1 = 38.7

s2 = 39.2

           

Use the significance level of 0.01 to test the claim of the researcher.

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