A simple random sample of size 41 is drawn from a normal population whose standard deviation is σ=2σ=2. The sample mean is ¯x=16.5x¯=16.5. a.) Construct a 92% confidence interval for μμ. (Round answers to two decimal place.) margin of error: lower limit: upper limit: b.) If the population were not normally distributed, what conditions would need to be met? (Select all that apply.) σσ is unknown simple random sample the population needs to be uniformly distributed the population needs to be normally distributed σσ is known large enough sample size n systematic sampling Is the result in part a.) valid? No Yes
A simple random sample of size 41 is drawn from a normal population whose standard deviation is σ=2σ=2. The sample mean is ¯x=16.5x¯=16.5. a.) Construct a 92% confidence interval for μμ. (Round answers to two decimal place.) margin of error: lower limit: upper limit: b.) If the population were not normally distributed, what conditions would need to be met? (Select all that apply.) σσ is unknown simple random sample the population needs to be uniformly distributed the population needs to be normally distributed σσ is known large enough sample size n systematic sampling Is the result in part a.) valid? No Yes
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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A simple random sample of size 41 is drawn from a normal population whose standard deviation is σ=2σ=2. The sample
a.) Construct a 92% confidence interval for μμ. (Round answers to two decimal place.)
margin of error:
lower limit:
upper limit:
b.) If the population were not
- σσ is unknown
- simple random sample
- the population needs to be uniformly distributed
- the population needs to be normally distributed
- σσ is known
- large enough
sample size n - systematic sampling
Is the result in part a.) valid?
- No
- Yes
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