A survey of 240 individuals found that one-third of them use their cell phones primarily for e-mail.
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A survey of 240 individuals found that one-third of them use their cell phones primarily for e-mail. Can you conclude statistically that the population proportion who use cell phones primarily for e-mail is less than 0.40?
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Cell Phone Usage Confidence Interval for a Proportion Yes 0...View the full answer
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