Atreatment is administered to a sample of n = 9 individuals selected from a population with a mean of m = 80 and a standard deviation of s = 12. after treatment, the effect size is measured by computing cohen’s d, and a value of d = 0.50 is obtained. based on this information, what is the mean for the treated sample? a. m = 82.b. this cannot be answered without knowing the sample size. c. m = 6.d. m = 86.

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The table shows the results of three plays in a football game. what is the net result of the three plays? football game 1st play 5 yards 2nd play -9 yards 3rd play 12 yards

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?