A monthly sold quantity X has mean 100 and standard deviation 10. Then the monthly profit is 8X - 100. Find mean and sta
Posted: Wed May 11, 2022 8:16 am
- 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 25 times
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?