Mathematics, 07.09.2020 19:01, orlando19882000
A manufacturer claims that the mean lifetime, u, of its light bulbs is 46 months. The standard deviation of these lifetimes is 8 months. One hundred fifty bulbs are selected at random, and their mean lifetime is found to be 48 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 46 months?
Answers: 1
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 16:00, RyannLambertt9722
On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?
Answers: 1
Mathematics, 21.06.2019 23:40, christinasmith9633
30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.
Answers: 1
Do you know the correct answer?
A manufacturer claims that the mean lifetime, u, of its light bulbs is 46 months. The standard devia...
Questions in other subjects:
Business, 27.01.2021 19:30
English, 27.01.2021 19:30
Mathematics, 27.01.2021 19:30
English, 27.01.2021 19:30
English, 27.01.2021 19:30
Mathematics, 27.01.2021 19:30
Chemistry, 27.01.2021 19:30
