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Mathematics, 27.03.2020 03:26 niceguy1997
A consumer mobility report indicates that in a typical day, 51% of users of mobile phones use their phone at least once per hour, 25% use their phone a few times per day, 8% use their phone morning and evening, and 12% hardly ever use their phones. The remaining 4% indicated that they did not know how often they used their mobile phone. Consider a sample of 150 mobile phone users. (a) What is the probability that at least 70 use their phone at least once per hour? Use the normal approximation of the binomial distribution to answer this question. (Round your answer to four decimal places.)
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A consumer mobility report indicates that in a typical day, 51% of users of mobile phones use their...
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