SOLUTION: If the 80 of this company bulbs are randomly selected what is the probality that the mean of this sample is greater than 975 hours.
Algebra.Com
Question 452814: If the 80 of this company bulbs are randomly selected what is the probality that the mean of this sample is greater than 975 hours.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
need more information
RELATED QUESTIONS
An electrical company claims that the average life of the bulbs it manufactures is 1200... (answered by CPhill)
Please help me solve this problem: {A company makes energy saver bulbs and it is known... (answered by radh)
1. A manufacturer of light bulbs produces bulbs that last a mean of 1050 hours with a... (answered by Boreal)
A manufacturer of light bulbs produces bulbs that last a mean of 1050 hours with a... (answered by CPhill)
It is thought that, on average, 3% of light bulbs produced by a certain company last for... (answered by ewatrrr)
If the mean of a normal distribution is 70 and the standard deviation is 10 what is the... (answered by stanbon)
A company manufactures light bulbs and wants to advertise a me an life of 1200 hours for... (answered by ewatrrr)
The heights of men in the Canada are normally distributed with a mean of 68 inches and a... (answered by stanbon)
A company manufacturing light bulbs claims that an average light bulb lasts 300
days. A... (answered by ewatrrr)