Mathematics, 26.10.2019 06:43 SkyeShadow525
Astudy of two hundred teens found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 12 hours. the population standard deviation is 4 hours. what is the margin of error for a 98% confidence interval?
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The square root of 9x plus 7 plus the square rot of 2x equall to 7
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