Amanufacturer claims that the mean lifetime, , of its light bulbs is months. the standard deviation of these lifetimes is months. forty bulbs are selected at random, and their mean lifetime is found to be months. assume that the population is normally distributed. can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months?

Fern corporation manufacturers a single product that has a selling price of $20.00 per unit. fixed expenses total $48,000 per year, and the company must sell 6,000 units to break even. if the company has a target profit of $14,000, sales in units must be:

Ok, so, theoretical question: if i bought the mona lisa legally, would anyone be able to stop me from eating it? why or why not?

How does the economy of cuba differ from the economy of north korea? in north korea, the government’s control of the economy has begun to loosen. in cuba, the government maintains a tight hold over the economy. in cuba, the government’s control of the economy has begun to loosen. in north korea, the government maintains a tight hold over the economy. in north korea, there is economic uncertainty in exchange for individual choice. in cuba, there is economic security in exchange for government control. in cuba, there is economic uncertainty in exchange for individual choice. in north korea, there is economic security in exchange for government control.\