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Question 10 0/ 1 point In an article appearing in Today's Health a writer states that the average number of calories in a serving of popcorn is 75. To determine if the average number of calories in a serving of popcorn is different from 75, a nutritionist selected a random sample of 20 servings of popcorn and computed the sample mean number of calories per serving to be 78 with a sample standard deviation of 7. Compute the z or t value of the sample test statistic. z=1.916 O t=1916 % (o) t=-1.916 w Hide question 10 feedback Use T, because the sample size is small and this is referring to a sample with a mean and SD. T stat = 78 — 75 5 =)