Carol successfully increases her business to 200 customers per day. however, her total cost for doing so is 50% greater than the expected $1,600. what percent greater is the actual marginal cost than the expected marginal cost, to the nearest full percent? (note: ignore the percent sign when entering your answer. for example, if your answer is 326%, enter 326.)

The leading producer of cell phone backup batteries, jumpstart, has achieved great success because they produce high-quality battery backups that are not too expensive. even so, another company that produces lower-quality batteries at the same price has also achieved some success, but not as much as jumpstart. also, in general, the price of backup batteries has declined because of economies of scale and learning. in addition, jumpstart has added complementary assets, such as a carrying case. considering all of these factors, the backup battery industry is most likely in the introduction stage. growth stage. shakeout stage. maturity stage.

Josie just bought her first fish tank a 36 -gallon glass aquarium, which she’s been saving up for almost a year to buy. for josie, the fish tank is most likely what type of purchase

Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 3%. a mutual-fund rating agency randomly selects 27 months and determines the rate of return for a certain fund. the standard deviation of the rate of return is computed to be 2.19%. is there sufficient evidence to conclude that the fund has moderate risk at the alpha equals 0.05 level of significance? a normal probability plot indicates that the monthly rates of return are normally distributed.