Find the probability that the length of life of the bulb

Reference no: EM13626154

Suppose that the length of life in hours (say, X) of the light bulb manufactured by company A is N(800,14400) and the length of life in hours (say, Y) of a light bulb manufactured by company B is N(850,2500). one bulb is randomly selected from each company and is burned unitl "death"

(a) Find the probability that the length of life of the bulb from company A exceeds the length of life of the bulb from company B by at least 15 hours.

(b) Find the probability that at least on eof the bulbs "lives" for at least 920 hours.

Reference no: EM13626154

Questions Cloud

The solubility of a gas in water depends on a nature of the : the solubility of a gas in water depends on a nature of the gas b temperature c pressure of the gas d all of the

Writing assignment in energy storage including flow battery : writing assignment in energy storage including flow battery flywheel supercpacitor li-ion battery and

What is the probability that a subscriber rented a car : a survey of magazine subscribers showed that 40.8 rented a car during the past 12 months for business reasons 20.2

The route used by a certain motorist in commuting to work : the route used by a certain motorist in commuting to work contains two intersections with traffic signals. the

Find the probability that the length of life of the bulb : suppose that the length of life in hours say x of the light bulb manufactured by company a is n80014400 and the length

The route used by a certain motorist in commuting to work : the route used by a certain motorist in commuting to work contains two intersections with traffic signals. the

A friend of mine is giving a dinner party his current wine : a friend of mine is giving a dinner party. his current wine supply includes 8 bottles of zinfandel 12 of merlot and 11

A researcher is studying the effect of three different row : a researcher is studying the effect of three different row spacing on the yields of four different varieties of cotton.

Consider a regression study involving one dependent : consider a regression study involving one dependent variable y one quantitative variable x1 and one qualitative

User Account

All Pages