Comparing Two Independent Population Proportions · Exercise 28
A group of friends debated whether more people aged 21-30 use wearable fitness devices than people aged 31-40. They consulted a research study of wearable fitness devices use among adults. The results of the survey indicate that of the 973 randomly sampled people in their twenties, 379 use wearable fitness devices. For people in their thirties, 404 of the 1,304 who were randomly sampled use wearable fitness devices. Test at the 5% level of significance.
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OpenStax, Introductory Statistics 2e · §10.3 Comparing Two Independent Population Proportions · Exercise 28
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