The quality control manager at a computer manufacturing company believes that the mean life of a computer is 80 months, with a standard deviation of 10 months. If he is correct, what is the probability that the mean of a sample of 73 computers would be less than 83.28 months? Round your answer to four decimal places.

4. project memo your supervisor has asked you to create a final copy of a memo announcing a special project. open the microsoft® word file ch01 memo from the data files. edit the memo to correct errors in keyboarding, punctuation, spelling, and word usage. submit the edited document to your instructor along with this assignment. to: department supervisorsfrom: tomas perezdate: january 3, 20--subject: playground projectas you now, are offices are close each year on observance of martin luther king, jr. day. this year, the company is organizing a service project for that day. we will be clean up the grove street playground and panting bushes, blubs, and flowers. the company is donating now playground equiptment and park benches. cleanup gear and tools will be provided, and a cook out will conclude the days’ activities. farther information will be provided as the date draws nearer. encourage the employee in you department too participate in this worthwhile effort.

Which of the following best describes why you need to establish goals for your program?

You hold a diversified $100,000 portfolio consisting of 20 stocks with $5,000 invested in each. the portfolio's beta is 1.12. you plan to sell a stock with b = 0.90 and use the proceeds to buy a new stock with b = 1.50. what will the portfolio's new beta be? do not round your intermediate calculations.