Mathematics, 13.02.2021 23:20, cindy437596
Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.1 years. Suppose also that exactly 25% of the tubes die before 4 years. Find the mean lifetime of TV tubes. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
Answers: 2
Mathematics, 21.06.2019 18:30, bellabarfield4286
The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?
Answers: 1
Mathematics, 21.06.2019 23:00, mindofnyny
In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.
Answers: 3
Suppose that the lifetimes of TV tubes are normally distributed with a standard deviation of 1.1 yea...
History, 30.08.2021 22:10
English, 30.08.2021 22:10
Mathematics, 30.08.2021 22:10