Determine the amount of the 2019 standard deduction allowed in the following independent situations. in each case, assume that the taxpayer is claimed as another person's dependent. amount of the standard deduction a. curtis, age 18, reports income as follows: $700 interest from a certificate of deposit and $12,400 from repairing cars. $ b. mattie, age 18, records income as follows: $600 cash dividends from a stock investment and $4,700 from handling a newspaper route. $ c. mel, age 16, incur income as follows: $675 interest on a bank savings account and $800 for painting a neighbor's fence. $ d. lucy, age 15, reports income as follows: $400 cash dividends from a stock investment and $500 from grooming pets. $ e. sarah, age 67 and a widow, incurs income as follows: $500 from a bank savings account and $3,200 from babysitting.

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?