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Instructor-created question Question Help A study was conducted in which students were asked to estimate the number of calories in a cheeseburger. One group was asked to do this after thinking about a calorie-laden cheesecake. A second group was asked to do this after thinking about an organic fruit salad. The mean number of calories estimated was 768 for the group that thought about the cheesecake and 911 for the group that thought about the organic fruit salad. Suppose that the study was based on a sample of 20 students in each group, and the standard deviation of the number of calories estimated was 128 for the people who thought about the cheesecake first and 147 for the people who thought about the organic fruit salad first. Complete parts (a) through (e). d. Assume the population variances are not qual. At the 0.10 level of significance, is there evidence that the mean estimated number of calories in the cheeseburger is lower for the people who thought about the cheesecake first than for the people who thought about the organic fruit salad first? Find the test statistic. STAT = (Round to two decimal places as needed.) Find the p-value. or p-value = (Round to three decimal places as needed.) on on State the conclusion of the test. on Ho. There that the mean number of estimated calories in the cheeseburger is lower for the people who thought about the cheesecake first than for the people who thought about the organic fruit salad first. on e. A psychologist now informs us that these 2 groups are independent, and that the population standard deviation for both groups is 140. What is the value of the Z-statistic for the test of on the hypothesis that the 2 groups have equal mean numbers of estimated calories? on Zstat = (Round to three decimal places as needed.) on Click to select your answer(s) and then click Check