Exam 3 Review Exam 3 5 Review - Mat How to Calculate the Desmos | Sclentifi iniversity A webassign.net/web/Student/Assignment-Responses/submit?dep=26336249&tags=autosave#question4734098_5 : Apps M Gmail > YouTube h Hulu |Watch UW System Authen. Crest Reservation Covid testing X* Camila Set Other bookmarks E Reading list care 6. [0.1/0.5 Points] DETAILS PREVIOUS ANSWERS PECKSTAT2 12.R.076.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A study of fast-food intake is described in certain paper. Adult customers at three hamburger chains (McDonald's, Burger King, and Wendy's) in New York City were approached as they entered the restaurant at lunchtime and asked to provide their receipt when exiting. The receipts were then used to determine what was purchased and the number of calories consumed was determined. In all, 3,857 people participated in the study. The sample mean number of calories consumed was 855 and the sample standard deviation was 671. A USE SALT (a) The sample standard deviation is quite large. What does this tell you about number of calories consumed in a hamburger-chain lunchtime fast-food purchase in New York City? O The large standard deviation tells us that there is a large amount of variability in the number of items purchased from customer to customer. O The large standard deviation tells us that there is a small amount of variability in the number of calories consumed from customer to customer. O The large standard deviation tells us that there is a large amount of variability in the time spent eating lunch from customer to customer. The large standard deviation tells us that there is a small amount of variability in the number of items purchased from customer to customer. The large standard deviation tells us that there is a large amount of variability in the number of calories consumed from customer to customer. . (b) Given the values of the sample mean and standard deviation and the fact that the number of calories consumed can't be negative, explain why it is not reasonable to assume that the distribution of calories consumed is normal. (Round your answer to nearest percent.) x % of calories consumed to be negative. Therefore, it is not vv reasonable assume that the distribution If the distribution were approximately normal with the given mean and standard deviation, roughly of calories consumed is normal. (c) Based on a recommended daily intake of 2,000 calories, the online Healthy Dining Findert recommends a target of 750 calories for lunch. Assuming that it is reasonable to regard the sample of 3,857 fast-food purchases as representative of all hamburger-chain lunchtime purchases in New York City, carry out a hypothesis test to determine if the sample provides convincing evidence that the mean number of calories in a New York City hamburger-chain lunchtime purchase is greater than the lunch recommendation of 750 calories. Use a - 0.01. State the appropriate null and alternative hypotheses. O Ho: H = 750 H: > 750 Ο H, μ 750 2 OneDrive Screenshot saved H: u+ 750 The screenshot was added to your O Ho: H< 750 H: u > 750 O Ho: 4 > 750 OneDrive. 10:29 PM O Type here to search .. 4/21/2021