Some experts believe that 15% of all freshwater fish in a country have such high levels of mercury that they are dangerous to eat. suppose a fish market has 150 fish tested, and 28 of them have dangerous levels of mercury. test the hypothesis that this sample comes from a population of fish that has a proportion larger than 15% of dangerous fish, assuming that this is a random sample. use a significance level of 0.05. comment on your conclusion.

Moody farms just paid a dividend of $3.95 on its stock. the growth rate in dividends is expected to be a constant 5 percent per year indefinitely. investors require a return of 14 percent for the first three years, a return of 12 percent for the next three years, and a return of 10 percent thereafter. what is the current share price?

During the holiday season, maria's department store works with a contracted employment agency to bring extra workers on board to handle overflow business, and extra duties such as wrapping presents. maria's is using during these rush times.

Quick calculate the roi dollar amount and percentage for these example investments. a. you invest $50 in a government bond that says you can redeem it a year later for $55. use the instructions in lesson 3 to calculate the roi dollar amount and percentage. (3.0 points) tip: subtract the initial investment from the total return to get the roi dollar amount. then divide the roi dollar amount by the initial investment, and multiply that number by 100 to get the percentage. b. you invest $200 in stocks and sell them one year later for $230. use the instructions in lesson 3 to calculate the roi dollar amount and percentage. (3.0 points) tip: subtract the initial investment from the total return to get the roi dollar amount. then divide the roi dollar amount by the initial investment, and multiply that number by 100 to get the percentage.