HELPPP ASAP .. pleaseee ! it’s 100 points !! & i will mark brainliest . these are the directions to a constructed response that says “ Submit your business presentation that clearly compares and contrasts three different cell phone service plans . “

Rate of return, standard deviation, coefficient of variation personal finance problem mike is searching for a stock to include in his current stock portfolio. he is interested in hi-tech inc.; he has been impressed with the company's computer products and believes hi-tech is an innovative market player. however, mike realizes that any time you consider a technology stock, risk is a major concern. the rule he follows is to include only securities with a coefficient of variation of returns below 1.07. mike has obtained the following price information for the period 2015 through 2018:hi-tech stock, being growth-oriented, did not pay any dividends during these 4 years. a. calculate the rate of return for each year, 2015 through 2018, for hi-tech stock. b. assume that each year's return is equally probable and calculate the average return over this time period. c. calculate the standard deviation of returns over the past 4 years. (hint: treat this data as a sample.) d. based on b and c determine the coefficient of variation of returns for the security. e. given the calculation in d what should be mike's decision regarding the inclusion of hi-tech stock in his portfolio?

Ultravision inc. anticipates sales of $280,000 from january through april. materials will represent 50 percent of sales, and because of level production, material purchases will be equal for each month during the four months of january, february, march, and april. materials are paid for one month after the month purchased. materials purchased in december of last year were $24,000 (half of $48,000 in sales). labor costs for each of the four months are slightly different due to a provision in the labor contract in which bonuses are paid in february and april. the labor figures are: january $14,000 february 17,000 march 14,000 april 19,000 fixed overhead is $10,000 per month. prepare a schedule of cash payments for january through april. (assume the $280,000 of sales occur equally over the four months of january through april, i.e. monthly sales = $280,000 / 4.)

Pittsburgh-based consol energy's coal business largely depends on orders from utilities and steel companies which, in turn, depend on broader economic demand from consumers for electricity and steel-based products like automobiles and appliances because of