MATH 302 Quiz 4 Question and Answers - Set 3

MATH 302 Quiz 4 Question and Answers - Set 3 Part 1 of 3 - 11.0/ 11.0 Points Question 1 of 20 1.0/ 1.0 Points If a teacher is trying to prove that a new method of teaching economics is more effective than a traditional one, he/she will conduct a: A.confidence interval B.one-tailed test C.two-tailed test D.point estimate of the population parameter Answer Key: B Question 2 of 20 1.0/ 1.0 Points 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. At the  = .05 level of significance, does the nutritionist have enough evidence to reject the writer’s claim? A.Cannot Determine B.No C.Yes Answer Key: B Question 3 of 20 1.0/ 1.0 Points In an article appearing in Today’s Health a writer states that the average number of calories in a