It has become common for shoppers to comparison shop using the Internet. In a survey, respondents who owned cell phones were asked whether they had, in the past 30 days, looked up the price of a product while they were in a store to see f they could get a better price somewhere else. The table below has responses grouped by income level. Complete parts a through c below. <$30K 216 $30K-$49.9K $50K-$74.9K >$75K 202 426 Yes 122 129 No 635 401 270 a) What percent of those earning less than $30K cyber comparison shop? What percent of those arning more than $75K do? About % of people eaming less than $30K cyber comparison shop. (Round to one decimal place as needed.) About % of people earning more than $75K cyber comparison shop. (Round to one decimal place as needed.) b) What percent of those who cyber comparison shop earn less than $30K? About % of those who cyber comparison shop earn less than $30K. (Round to one decimal place as needed.) c) Is it reasonable to assume that 28% of all shoppers use their phones to cyber comparison shop? Why or why not? O A. No, because the percent is significantly different from the percent in the sample. O B. Yes, because the sample is large enough that the sample can be assumed to be representative. O C. Yes, because the sample is representative of the population of all shoppers and the given value is very close to the sample value. O D. No, because the sample is probably not representative of the population of all shoppers. Next N MacBook Pro esc & * @ #3 $ %3D ! 9 4 5 7 1 P IT Q W tab G H K F * 00
It has become common for shoppers to comparison shop using the Internet. In a survey, respondents who owned cell phones were asked whether they had, in the past 30 days, looked up the price of a product while they were in a store to see f they could get a better price somewhere else. The table below has responses grouped by income level. Complete parts a through c below. <$30K 216 $30K-$49.9K $50K-$74.9K >$75K 202 426 Yes 122 129 No 635 401 270 a) What percent of those earning less than $30K cyber comparison shop? What percent of those arning more than $75K do? About % of people eaming less than $30K cyber comparison shop. (Round to one decimal place as needed.) About % of people earning more than $75K cyber comparison shop. (Round to one decimal place as needed.) b) What percent of those who cyber comparison shop earn less than $30K? About % of those who cyber comparison shop earn less than $30K. (Round to one decimal place as needed.) c) Is it reasonable to assume that 28% of all shoppers use their phones to cyber comparison shop? Why or why not? O A. No, because the percent is significantly different from the percent in the sample. O B. Yes, because the sample is large enough that the sample can be assumed to be representative. O C. Yes, because the sample is representative of the population of all shoppers and the given value is very close to the sample value. O D. No, because the sample is probably not representative of the population of all shoppers. Next N MacBook Pro esc & * @ #3 $ %3D ! 9 4 5 7 1 P IT Q W tab G H K F * 00
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 26PFA
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Transcribed Image Text:It has become common for shoppers to comparison shop using the Internet. In a survey, respondents who owned cell phones were asked whether they had, in the past 30 days, looked up the price of a product while they were in a store to see if
they could get a better price somewhere else. The table below has responses grouped by income level. Complete parts a through c below.
<$30K
$30K-$49.9K
$50K-$74.9K
>$75K
Yes
216
122
129
202
No
635
401
270
426
...
a) What percent of those earning less than $30K cyber comparison shop? What percent of those arning more than $75K do?
About % of people earning less than $30K cyber comparison shop.
(Round to one decimal place as needed.)
About % of people earning more than $75K cyber comparison shop.
(Round to one decimal place as needed.)
b) What percent of those who cyber comparison shop earn less than $30K?
About
% of those who cyber comparison shop earn less than $30K.
(Round to one decimal place as needed.)
c) Is it reasonable to assume that 28% of all shoppers use their phones to cyber comparison shop? Why or why not?
O A. No, because the percent is significantly different from the percent in the sample.
B. Yes, because the sample is large enough that the sample can be assumed to be representative.
O C. Yes, because the sample is representative of the population of all shoppers and the given value is very close to the sample value.
D. No, because the sample is probably not representative of the population of all shoppers.
Next
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