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An online survey of 1,000 adults asked, What do you buy from your mobile device? The results indicated that 61%

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An online survey of 1,000 adults asked, “What do you buy from your mobile device?” The results indicated that 61% of the females said clothes as compared to 39% of the males. (Data extracted from Ebates.com 2014 Mobile Shopping Survey: Nearly Half of Americans Shop from a Mobile Device, available from bit.ly/1hi6kyX.) The sample sizes of males and females were not provided. Suppose that the results were as shown in the following table:

a. Is there evidence of a significant difference between the pro-portion of males and females who say they buy clothing from their mobile device at the 0.01 level of significance?

b. Determine the p- value in (a) and interpret its meaning.

c. What are your answers to (a) and (b) if 270 males say they buy clothing from their mobile device and 230 did not?

d. Compare the results of (a) through (c) to those of Problem 10.29 (a), (b), and (d) on page 346.

Transcribed Image Text:

GENDER BUY CLOTHES FROMM THEIR MOBILE DEVICE Male Yes Ne Total 195 305 500 Female 305 195 500 Total 500 500 1.000

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a Chi Square Test Observed Frequencies Gender Buy Clothing Male Female Total Yes 195 305 500 No 305 …View the full answer


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Business Statistics A First Course

Business Statistics A First Course

ISBN: 9780321979018

7th Edition

Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan

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Question Posted: July 16, 2015 21:51:30
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