subject
Business, 05.01.2020 18:31 moneytt7508

The quality-control manager at a compact fluorescent light bulb (cfl) factory needs to determine whether the mean life of a large shipment of cfls is equal to 7 comma 454 hours. the population standard deviation is 1 comma 080 hours. a random sample of 81 light bulbs indicates a sample mean life of 7 comma 154 hours.

a. at the 0.05 level of significance, is there evidence that the mean life is different from 7 comma 454 hours question mark

ansver
Answers: 1

Another question on Business

question
Business, 22.06.2019 12:20
Selected transactions of the carolina company are listed below. classify each transaction as either an operating activity, an investing activity, a financing activity, or a noncash activity. 1. common stock is sold for cash above par value. 2. bonds payable are issued for cash at a discount
Answers: 2
question
Business, 22.06.2019 23:10
R& m chatelaine is one of the largest tax-preparation firms in the united states. it wants to acquire the tax experts, a smaller rival. after the merger, chatelaine will be one of the two largest income-tax preparers in the u.s. market. what should chatelaine include in its acquisition plans? it should refocus its attention from the national to the international market. in addition to acquiring the tax experts, it should also determine the best way to drive independent "mom and pop" tax preparers out of business. chatelaine will need to explain to the federal trade commission how the acquisition will not result in an increase in prices for consumers. chatelaine should enter a price-based competition with its other major competitor to force it out of business and become a monopoly.
Answers: 3
question
Business, 22.06.2019 23:30
Which statement best describes the two reactions? abcl, + h2 → 2hci2h + h = he + inreaction a involves a greater change, and reaction b involves a change in element identity.reaction b involves a greater change and a change in element identityreaction a involves a greater change and a change in element identity.reaction b involves a greater change, and reaction a involves a change in element identity.
Answers: 1
question
Business, 22.06.2019 23:50
Mauro products distributes a single product, a woven basket whose selling price is $15 and whose variable expense is $12 per unit. the company’s monthly fixed expense is $4,200. required: 1. solve for the company’s break-even point in unit sales using the equation method. 2. solve for the company’s break-even point in dollar sales using the equation method and the cm ratio. (do not round intermediate calculations. round "cm ratio percent" to nearest whole percent.) 3. solve for the company’s break-even point in unit sales using the formula method. 4. solve for the company’s break-even point in dollar sales using the formula method and the cm ratio. (do not round intermediate calculations. round "cm ratio percent" to nearest whole percent.)
Answers: 2
You know the right answer?
The quality-control manager at a compact fluorescent light bulb (cfl) factory needs to determine whe...
Questions
question
Mathematics, 25.08.2021 19:40
question
Mathematics, 25.08.2021 19:40
Questions on the website: 13722367