The life span of a 30-watt LED light is known to be normally distributed with a = 20 hours. A random sample of 20 LED light has a mean life of 7 = 1020 hours. Compare the 90% confidence lower bound of this confidence interval with a two-sided confidence interval. Which standard normal curve applies to the 90% confidence level? Include your solutions. O a. CI lower bound (1013) and CI two-sided (1011, 1029). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
The life span of a 30-watt LED light is known to be normally distributed with a = 20 hours. A random sample of 20 LED light has a mean life of 7 = 1020 hours. Compare the 90% confidence lower bound of this confidence interval with a two-sided confidence interval. Which standard normal curve applies to the 90% confidence level? Include your solutions. O a. CI lower bound (1013) and CI two-sided (1011, 1029). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![The life span of a 30-watt LED light is known to be normally distributed with o = 20 hours. A
random sample of 20 LED light has a mean life of = 1020 hours. Compare the 90% confidence
lower bound of this confidence interval with a two-sided confidence interval. Which standard normal
curve applies to the 90% confidence level? Include your solutions.
O a. CI lower bound (1013) and CI two-sided (1011, 1029). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
-3
Ob.CI lower bound (1014) and CI two-sided (1013, 1027). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
-1
i
2
i](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F753bc901-6e4f-4c4b-9168-9ca047ef6ade%2Fb6a60d0e-e8d3-4878-ae9d-b0de644f2c72%2Fphcz3q_processed.png&w=3840&q=75)
Transcribed Image Text:The life span of a 30-watt LED light is known to be normally distributed with o = 20 hours. A
random sample of 20 LED light has a mean life of = 1020 hours. Compare the 90% confidence
lower bound of this confidence interval with a two-sided confidence interval. Which standard normal
curve applies to the 90% confidence level? Include your solutions.
O a. CI lower bound (1013) and CI two-sided (1011, 1029). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
-3
Ob.CI lower bound (1014) and CI two-sided (1013, 1027). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
-1
i
2
i
![O. CI lower bound (1014) and CI two-sided (1013, 1027). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
-2
-1
-1
1
O d. NONE](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F753bc901-6e4f-4c4b-9168-9ca047ef6ade%2Fb6a60d0e-e8d3-4878-ae9d-b0de644f2c72%2Fzn6z2us_processed.png&w=3840&q=75)
Transcribed Image Text:O. CI lower bound (1014) and CI two-sided (1013, 1027). Lower bound of the one-sided confidence interval is greater than the lower bound of two-sided
-2
-1
-1
1
O d. NONE
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