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In a survey 1000 adults were asked whether they used a smartphone, a mobile phone (but not a smartphone) or did not use a mobile phone. The results were as follows: Mobile phone use Age of respondent Smartphone Mobile phone but not smartphone No use Total 16 to 24 135 59 2 196 25 to 34 122 70 1 193 35 to 54 94 91 4 189 55 to 64 38 150 20 208 65 or older 5 142 67 214 Total 394 512 94 1000 Using these results the relationship between the age of the respondent and the type of mobile phone they use is to be tested using the x² test for contingency tables. In this test, what is the expected value for the respondents aged 16 to 24 who use a smartphone? (Give your answer correct to three decimal places.) Answer:

In a survey 1000 adults were asked whether they used a smartphone, a mobile phone (but not a smartphone) or did not use a mobile phone. The results were as follows: Mobile phone use Age of respondent Smartphone Mobile phone but not smartphone No use Total 16 to 24 135 59 2 196 25 to 34 122 70 1 193 35 to 54 94 91 4 189 55 to 64 38 150 20 208 65 or older 5 142 67 214 Total 394 512 94 1000 Using these results the relationship between the age of the respondent and the type of mobile phone they use is to be tested using the x² test for contingency tables. In this test, what is the expected value for the respondents aged 16 to 24 who use a smartphone? (Give your answer correct to three decimal places.) Answer:

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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In a survey 1000 adults were asked whether they used a smartphone, a mobile phone (but not a smartphone) or did not use a mobile phone. The results were as follows: Mobile phone use Age of respondent Smartphone Mobile phone but not smartphone No use Total 16 to 24 135 59 2 196 25 to 34 122 70 1 193 35 to 54 94 91 4 189 55 to 64 38 150 20 208 65 or older 5 142 67 214 Total 394 512 94 1000 Using these results the relationship between the age of the respondent and the type of mobile phone they use is to be tested using the x² test for contingency tables. In this test, what is the expected value for the respondents aged 16 to 24 who use a smartphone? (Give your answer correct to three decimal places.) Answer:
Transcribed Image Text:In a survey 1000 adults were asked whether they used a smartphone, a mobile phone (but not a smartphone) or did not use a mobile phone. The results were as follows: Mobile phone use Age of respondent Smartphone Mobile phone but not smartphone No use Total 16 to 24 135 59 2 196 25 to 34 122 70 1 193 35 to 54 94 91 4 189 55 to 64 38 150 20 208 65 or older 5 142 67 214 Total 394 512 94 1000 Using these results the relationship between the age of the respondent and the type of mobile phone they use is to be tested using the x² test for contingency tables. In this test, what is the expected value for the respondents aged 16 to 24 who use a smartphone? (Give your answer correct to three decimal places.) Answer:
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