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Question 3 Not complete Points out of 1.00 As part of a promotion for a new type of cracker, free samples are offered to shoppers in a local supermarket. The probability that a shopper will buy a packet of crackers after tasting the free sample is 0.200. Different shoppers can be regarded as independent trials. Let p be the proportion of the next n shoppers that buy a packet of the crackers after tasting a free sample. How large should n be so that the standard deviation of is no more than 0.01? Flag question Select one b. 16 C. 1600 Check Question 4 Not complete Points out of 1.00 A one-question survey is to be distributed to a random sample of 1500 adults in Ohio. The question asks if they support an increase in the state sales tax from 5% to 6%, with the additional revenue going to education. Let denote the proportion of adults in the sample who say they support the increase Suppose that 40% of all adults in Ohio support the increase Flag questionReference: Ref 5-23 What is the probability that p will be more than 50%? Select one a. less than 0.0001 b. about 0.1 C. 0.4602 d. 0.50 CheckQuestion 5 Let X be a binomial random variable with p = 0.35. What size sample would be required to make the Not completes standard deviation of the proportion pequal to 0.04? 12 Points out of 1.00 Flag question Select one: a. 6 b. 33 c. 12 d. 143 e. Not within + 5 of any of the above. Check

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