Question

please show all work

Question 9 (13 points) In a test of weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lb, with a standard deviation of 4.8 lb. Answer the questions to construct and interpret a 90% confidence interval for the true mean weight loss for all adults who used the Atkins weight loss program. a. (1 pt.) What parameter are you estimating? (p or u) b. (1 pt.) Give the point estimate that you will use. c. (3 pts.) Compute the margin of error. Show your work! d. (1 pt.) Construct the confidence interval. e. (2 pts.) Give an interpretation of your confidence interval that relates back to the context/story of the problem like we did in class. f. (5 pts.) Does the Atkins program appear to work based on your work in this question? Why or why not?

Answer 1

solution:- Parameter 11 4 2.1 by point estimate error a Zara c) Margim of = 1.645 x 4.8 V40 1.25 90% confidence internal X Į ME= 2.1 1 1.25 = 3.35 e (10.85 95% confident that mean weight loss for all adults who used the At kims is between 0.85 and 3.35. we are trovare since $) yes Programs appears work does not contain o so it has Effect on weight loss. CI