Mathematics, 22.01.2021 01:00, hiihihihij

A manufacturer of TV tubes has for many years used a process giving a mean tube life of 4700 hours and a standard deviation of 1460 hours. A new process is tried to see if it will increase the life significantly. A sample of 100new tubes gave a mean life of 5000 hours. Is the new process better than the old one at a 1% level of significance?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:00, makaylahunt

Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did

Answers: 2

continue

Mathematics, 21.06.2019 14:00, indexes06

Bob’s bank charges him a $3.15 service fee every time he uses an out-of-network atm. if bob uses an out-of-network atm an average of three times every two weeks, how much will he pay in service fees over the course of a year? a. $327.60 b. $109.20 c. $491.40 d. $245.70 select the best answer from the choices provided a b c d

Answers: 1

continue

Mathematics, 21.06.2019 16:30, pennygillbert

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

Answers: 2

continue

Mathematics, 21.06.2019 20:00, sahaitong2552

Write each of the following numerals in base 10. for base twelve, t and e represent the face values ten and eleven, respectively. 114 base 5 89t base 12

Answers: 1

continue

Do you know the correct answer?

A manufacturer of TV tubes has for many years used a process giving a mean tube life of 4700 hours a...