The grade point average collected from a random sample of 150 students producing a mean of 2.86. Assume that the population standard deviation is 0.78. Construct the confidence interval for the population mean, m, if c = 0.98.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?