An employer wants to determine the amount of job satisfaction experienced by his employees. Employees are assigned to one of four pay scales. Each employee from the top two pay scales are chosen for the sample. Select the
statement that best describes the result of the undercoverage bias.
There is no undercoverage bias.
The undercoverage bias will likely overestimate the inferred job satisfaction for the population.
The undercoverage bias will likely underestimate the inferred job satisfaction for the population.
The undercoverage bias will likely reflect the inferred job satisfaction correctly for the population.

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

Which of the following parabolas opens down?

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?