Business, 12.08.2020 19:01 ConfusedJuliana

The operations manager at a light emitting diode (LED) light bulb factory needs to estimate the mean life of a large shipment of LEDs. The manufacturer's specifications are that the standard deviation is 1,500 hours. A random sample of 64 SELF TEST LEDs indicated a sample mean life of 49,875 hours. a. Construct a 95% confidence interval estimate for the population mean life of LED light bulbs in this shipment.
b. Do you think that the manufacturer has the right to state that the LED light bulbs have a mean life of 50,000 hours? Explain.
c. Must you assume that the population LED light bulb lifei normally distributed? Explain.
d. Suppose that the standard deviation changes to 500 hours. What are your answers in (a) and (b)?

Answers: 2

Show answers

Another question on Business

Business, 22.06.2019 02:30

When interest is compounded continuously, the amount of money increases at a rate proportional to the amount s present at time t, that is, ds/dt = rs, where r is the annual rate of interest. (a) find the amount of money accrued at the end of 3 years when $4000 is deposited in a savings account drawing 5 3 4 % annual interest compounded continuously. (round your answer to the nearest cent.) $ (b) in how many years will the initial sum deposited have doubled? (round your answer to the nearest year.) years (c) use a calculator to compare the amount obtained in part (a) with the amount s = 4000 1 + 1 4 (0.0575) 3(4) that is accrued when interest is compounded quarterly. (round your answer to the nearest cent.) s = $

Answers: 1

Answer

Business, 22.06.2019 05:50

Nichols inc. manufactures remote controls. currently the company uses a plantminuswide rate for allocating manufacturing overhead. the plant manager is considering switchingminusover to abc costing system and has asked the accounting department to identify the primary production activities and their cost drivers which are as follows: activities cost driver allocation rate material handling number of parts $5 per part assembly labor hours $20 per hour inspection time at inspection station $10 per minute the current traditional cost method allocates overhead based on direct manufacturing labor hours using a rate of $20 per labor hour. what are the indirect manufacturing costs per remote control assuming an method is used and a batch of 10 remote controls are produced? the batch requires 100 parts, 5 direct manufacturing labor hours, and 3 minutes of inspection time.

Answers: 2

Answer

Business, 22.06.2019 11:00

Aprofessional does specialized work that's primarily: degree based. medical or legal. well paying. intellectual and creative

Answers: 2

Answer

Business, 22.06.2019 14:40

Nell and kirby are in the process of negotiating their divorce agreement. what should be the tax consequences to nell and kirby if the following, considered individually, became part of the agreement? a. in consideration for her one-half interest in their personal residence, kirby will transfer to nell stock with a value of $200,000 and $50,000 of cash. kirby's cost of the stock was $150,000, and the value of the personal residence is $500,000. they purchased the residence three years ago for $300,000.nell's basis for the stock is $ xkirby's basis in the house is $ xb. nell will receive $1,000 per month for 120 months. if she dies before receiving all 120 payments, the remaining payments will be made to her estate.the payments (qualify, do not qualify) as alimony and are (included in, excluded from) nell's gross income as they are received.c. nell is to have custody of their 12-year-old son, bobby. she is to receive $1,200 per month until bobby (1) dies or (2) attains age 21 (whichever occurs first). after either of these events occurs, nell will receive only $300 per month for the remainder of her life.$ x per month is alimony that is (included in, excluded from) nell's gross income, and the remaining $ x per month is considered (child support, property settlement) and is (nontaxable, taxable) to nell.

Answers: 3

Answer

You know the right answer?

The operations manager at a light emitting diode (LED) light bulb factory needs to estimate the mean...

Questions