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Determine probability of a random teen watching

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If the time a teenager spends watching TV every day is normally distributed, with a mean of 4 hours and 20 minutes and a standard deviation of 45 minutes. What equation is used to determine probability of a random teen watching less 5 hours per day? Is the same equation to determine if its between 6 to 7 hours per day? and 5 hours per day?

Reference no: EM132050455

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