b. Testing for the Proportion A company claims that 83% of customers buying their product are satisfied with that produc

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B Testing For The Proportion A Company Claims That 83 Of Customers Buying Their Product Are Satisfied With That Produc 1 (144.33 KiB) Viewed 26 times

b. Testing for the Proportion A company claims that 83% of customers buying their product are satisfied with that product. Assume we have a sample of 74 persons, chosen randomly, who bought their product, and only 52 of them are satisfied. Perform a Test of Significance Level 0.05 to see if the data is supporting the company's claim. c. Z-test Every day I feed my cat Wolfie with dry food. The daily portion needs to be 60 grams, but, of course, the actual portion weight is never equal to 60. I want to see if I am underfeeding my cat. To that end, I have weighted the portions for 2 weeks: ## 66.8, 60.9, 62.2, 59, 55.1, 63.8, 59.1, 60, 68.3, 56.7, 57.6, 56.1, 59, 61.5 Assuming that the distribution of daily portions is Normal with standard deviation 5, test the Hypothesis at 5% significance level that I am underfeeding Wolfie.