A Monthly Sold Quantity X Has Mean 100 And Standard Deviation 10 Then The Monthly Profit Is 8x 100 Find Mean And Sta 1 (50.37 KiB) Viewed 23 times
A monthly sold quantity X has mean 100 and standard deviation 10. Then the monthly profit is 8X - 100. Find mean and standard deviation of the monthly profit. mean of the monthly profit standard deviation of the monthly profit = Show your work.
A math exam is given to 500 students. Among 500 students, 300 are middle-school students and 200 are high-school students. The mean exam score for the middle-school students is 70 and the mean test score for the high-school students is 80. What is the mean of all students?
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