Mathematics, 25.12.2019 01:31 nnaomii
The life in hours of a battery is known to be approximately normally distributed with standard deviation σ = 1.25 hours. a random sample of 10 batteries has a mean life of x =40.5hours. a. is there evidence to support the claim that battery life exceeds 40 hours? use α = 0.05. b. what is the p-value for the test in part (a)? c. what is the β-error for the test in part (a) if the true mean life is 42 hours? d. what sample size would be required to ensure that β does not exceed 0.10 if the true mean life is 44 hours? e. explain how you could answer the question in part (a) by calculating an appropriate confidence bound on life.
Answers: 3
Mathematics, 20.06.2019 18:02
Perry has a garden. 1/2 of his garden is planted with tomatoes. 1/3 of his garden is planted with peppers. the remaining part of his garden is planted with flowers. what fraction of perry’s garden is planted with flowers?
Answers: 1
Mathematics, 21.06.2019 17:30
What is the number 321,000,000 in scientific notation? also what is the number? ?
Answers: 2
Mathematics, 21.06.2019 22:30
Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?
Answers: 2
Mathematics, 21.06.2019 23:10
12 3 4 5 6 7 8 9 10time remaining01: 24: 54which graph represents this system? y=1/2x + 3 y= 3/2x -1
Answers: 1
The life in hours of a battery is known to be approximately normally distributed with standard devia...
Mathematics, 29.01.2020 06:53
Mathematics, 29.01.2020 06:53
Mathematics, 29.01.2020 06:53
Mathematics, 29.01.2020 06:53
Mathematics, 29.01.2020 06:53
Mathematics, 29.01.2020 06:53
Mathematics, 29.01.2020 06:53