Direct marketing companies are turning to the Internet for new opportunities. A recent study by Gruppo, Levey,

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Direct marketing companies are turning to the Internet for new opportunities. A recent study by Gruppo, Levey, & Co. showed that 73% of all direct marketers conduct transactions on the Internet. Suppose a random sample of 300 direct marketing companies is taken.

a. What is the probability that between 210 and 234 (inclusive) direct marketing companies are turning to the Internet for new opportunities?

b. What is the probability that 78% or more of direct marketing companies are turning to the Internet for new opportunities?

c. Suppose a random sample of 800 direct marketing companies is taken. Now what is the probability that 78% or more are turning to the Internet for new opportunities? How does this answer differ from the answer in part (b)? Why do the answers differ?

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p 73 n 300 a P 210 x 234 70 78 z 117 z 195 From Table A5 the area for z 117 ...View the full answer

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Business Statistics for Contemporary Decision Making

ISBN: 978-0470910184

6th Edition

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Question Posted: Mar 19, 2013 04:26 AM

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Direct marketing companies are turning to the Internet for new opportunities. A recent study by Gruppo, Levey,

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p 73 n 300 a P 210 x 234 70 78 z 117 z 195 From Table A5 the area for z 117 ...View the full answer

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