Business, 09.04.2020 22:01 itzjames025
Power , Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 35.0 hours and a standard deviation of 5.5 hours. As a part of its quality assurance program, Power , Inc. tests samples of 25 batteries. What can you say about the shape of the distribution of the sample mean.
a. What can you say about the shape of the distribution of the sample mean?
b. What is the standard error of the distribution of the sample mean?
c. What proportion of the samples will have a mean useful life of more than 36 hours?
d. What proportion of the sample will have a mean useful life greater than 34.5 hours?
e. What proportion of the sample will have a mean useful life between 34.5 and 36.0 hours?
Answers: 3
Business, 22.06.2019 12:30, imamnaab5710
Consider a treasury bill with a rate of return of 5% and the following risky securities: security a: e(r) = .15; variance = .0400 security b: e(r) = .10; variance = .0225 security c: e(r) = .12; variance = .1000 security d: e(r) = .13; variance = .0625 the investor must develop a complete portfolio by combining the risk-free asset with one of the securities mentioned above. the security the investor should choose as part of her complete portfolio to achieve the best cal would be a. security a b. security b c. security c d. security d
Answers: 3
Business, 23.06.2019 00:40, sportie59
On june 3, teal company sold to chester company merchandise having a sale price of $2,600 with terms of 2/10, n/60, f. o.b. shipping point. an invoice totaling $91, terms n/30, was received by chester on june 8 from john booth transport service for the freight cost. on june 12, the company received a check for the balance due from chester company. prepare journal entries on the teal company books to record all the events noted above under each of the following bases. (1) sales and receivables are entered at gross selling price. (2) sales and receivables are entered at net of cash discounts.
Answers: 3
Power , Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batter...
Mathematics, 18.03.2020 02:23
Biology, 18.03.2020 02:23
Mathematics, 18.03.2020 02:23