this is my question:

POF 80 Test 3 Fa 20.pdf Q Search in Drive Open with ... 3 The manager of a fast-food restaurant is concerned about customers who ask for a water cup when placing an New My Drive order, and then fill the cup with a soft drink from the beverage fountain instead of filling it with water. The manager selected a random sample of 70 customers who asked for a water cup when placing an order, and 31 found that 18 of those customers filled the cup with a soft drink instead of water. My Drive Trash has changed. Items will be (a) Find the sample size, and the proportion of the sample who ordered water and took a soft drink instead X (p). Are the conditions for the normal curve satisfied? Show your calculations. (2 pt) Shared with me Quick Access Recent (b) Construct a 95% confidence interval for the proportion of all customers who, having asked for a water cup Starred ABCD with their order, will fill the cup with a soft drink from the beverage fountain. (2 pts) Trash Storage POF MRA_ClaimForm.pdf ed-2432276202199.m. 75ec5a9070124bd695f0929. You opened in the past month You in the past year You uploaded in the past year 10.3 GB of 15 GB used (c) If we want to cut the width of the confidence interval in half (keeping the same confidence level and assuming the sample proportion will be the same), how many customers will we have to sample? Show Buy storage Folders your calculation. (1 pt) Name DOG 4 Listed below are the ages (in years) of a sample of randomly selected CEOs of U.S. technology companies. Files 35 42 50 25 21 38 38 47 33 53 27 45 52 65 (a) What is the sample size, the sample mean, and the sample standard deviation? (1 pt) CA 92335 (b) Construct a 98% confidence interval for the mean age of all tech CEOs. Show all calculations. (2 pts) CA 916 9-10 D 2 uploads complete X 75ec5a9070124bd695f092.. POF 517d1152458c924e7f. (c) Write a sentence that interprets your confidence interval in the context of the question. (1 pt) 80 Test 3 Fa 20.pdf V Handout 6.2 Hypothesis Testing for Popu. Page 4 +