The number of hours per week that high school seniors spend on computers is normally distributed, with a mean of 5 hours and a standard deviation of 2 hours. 70 students are chosen at random. let y represent the mean number of hours spent on the computer for this group. find the probability that y is between 5.1 and 5.7

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

What multiplys to be 1 but adds up to be 4

You are choosing between two health clubs. club a offers membership for a fee of $ 28 plus a monthly fee of $ 20. club b offers membership for a fee of $ 20 plus a monthly fee of $ 22. after how many months will the total cost of each health club be the same? what will be the total cost for each club? in __ months the total cost of each health club will be the same.