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Test_2A_Nov_2008 (omit 1, and 9a

# Test_2A_Nov_2008 (omit 1, and 9a - Test 2A Math 1P98 Nov...

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Test 2A Math 1P98 Nov 2008 5:15-6:15 Name .......................................... Box number ................................. You may use a handwritten half piece of paper and a non graphing calculator that has only two lines of display. Final answers must include at least 3 significant digits, so remember to keep at least 4 significant digits throughout the question. Good Luck! ...................................................................................................................................... [12] 1. In order to optimize the amount of ketchup in a new design of small packages at fast food stores, the amount of ketchup used by customers is studied. The amount of ketchup used on a serving of fries forms a normal distribution with population mean 15 mL and standard deviation 3 mL. a. Find the probability that more than 10 mL is used. Include a formula and diagram. b. Consider the people who use the most ketchup, the top 13% . Find the minimum amount of ketchup used by this group. This amount is planned to be packaged and marketed. Include a formula and diagram. c. For a sample of 8 people in a fast food restaurant, find the probability that the mean ketchup used was less than 13 mL. Include formula and diagram.

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[4] 2a. After a recent recycling advertising blitz, St Catharines’ City Hall wishes to know how many houses need to be surveyed to be 95% sure of being within 3% of the number of city houses using a green recycling bin? Show formula and method.
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Test_2A_Nov_2008 (omit 1, and 9a - Test 2A Math 1P98 Nov...

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