TRY 8.15 Vegetarians (Example 4) In 2016 the Harris poll estimated that 3.3% of American adults are vegetarian. A nutritionist thinks this rate has increased. The nutritionist samples 150 American adults and finds that 11 are vegetarian. & a. What is p, the sample proportion of vegetarians? b. What is po, the hypothetical proportion of vegetarians? c. Find the value of the test statistic. Explain the test statistic in context.

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