The revenue (X) from the sales of a compay has an expected value of $7,263, with a standard deviation of $495 while the cost (Y) has an expected value of $3,175, with a standard deviation of $231. The covariance between the revenue and cost is 1,691. What is the variance of the profit (X-Y) of the company?

At a small store, a customer enters the front door on average every 8 minutes. a prior study indicated that the time between customers entering the front door during weekdays follows an exponential distribution. what is the probability that the time between customers entering the store on a weekday will be less than or equal to 7? select one: a. 62 b. 43 c. 1/8 d. 7/8 e. 58

Reagan corporation is a wholesale distributor of truck replacement parts. initial amounts taken from reagan's records are as follows:

Match the steps for conducting an informational interview with the task involved in each step or its purpose. 1. research your chosen career field. 2. identify someone to interview. 3. prepare for the interview. 4. conduct the informational interview. 5. follow up with your interviewer. a. learn more about a company that interests you. b. encourage the interviewer to do most of the talking while you take notes. c. write a handwritten -you letter to express that you want to stay in touch. d. make contact through email, a phone call, or mail to arrange the meeting. e. choose a conservative, professional ensemble to wear.