A survey of 260 young professionals found that one-fifth 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 0 237 Use a 95% confidence interval The 95% confidence interval is As 0.23 is population proportion is less than 0.23 (Use ascending order Round to four decimal places as needed) of the confidence interval, we conclude that the

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