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?

if you use only 25 for your entertainment and only 200 for the groceries that you really need and take out the 50 per month for the computer then that should be enough

a

explanation:

the answer is "b.the increased supply will create a surplus. "

the essential thought behind price controls is straightforward - utilize the power of law to modify the equilibrium of a market. for instance, the legislature may choose that the steel business needs to survive, and in this way pass a law to set a value floor on steel. this implies all steel sold must offer at or over the floor value, which must be set over the equilibrium cost for it to have any impact. the switch could likewise happen - the administration can choose that steel is excessively costly and set a value roof underneath its equilibrium value, with the goal that all steel must be sold at or beneath that ceiling.