An electrical firm manufactures light bulbs that have a lifetime that is approximately normally distributed with a mean of 800 hours and a standard deviation of 40 hours. Test the hypothesis that u against the alternative, u # 800 hours, if a random sample of 30 bulbs has an average life of 788 hours. Use a P-value in your answer. Use 0.05 level of significance. 800 hours

An electrical firm manufactures light bulbs that have a lifetime that is approximately normally distributed with a mean of 800 hours and a standard deviation of 40 hours. Test the hypothesis that u against the alternative, u # 800 hours, if a random sample of 30 bulbs has an average life of 788 hours. Use a P-value in your answer. Use 0.05 level of significance. 800 hours

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

Cosstdt
A rare genetic disease is known to be carried by DD people among 10000 people in the society. a) In a random sample of 1000 people, calculate the probability that less than GG carry the disease? (Please solve this section with Binomial distribution) a) In a random sample of 2000 people, calculate the probability that more than HH carry the disease? (Please solve this section with Poisson distribution) c) If people are randomly tested for the disease, what is the probability that the first person who is found to carry the disease is the LL person?
convert 123g tomg
2. 98 + 3 =
28=4+mm=
100 110
dzdyds 74 ZA hage
288 国