Solution Found!
A 95% confidence interval for a population mean is
Chapter 5, Problem 20E(choose chapter or problem)
A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95% confidence interval will be computed from a sample of size 100 drawn from the same population. Choose the best answer to fill in the blank: The interval from the sample of size 400 will be approximately ________ as the interval from the sample of size 100.
i. One-eighth as wide
ii. One-fourth as wide
iii. One-half as wide
iv. The same width
v. Twice as wide
vi. Four times as wide
vii. Eight times as wide
Questions & Answers
QUESTION:
A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95% confidence interval will be computed from a sample of size 100 drawn from the same population. Choose the best answer to fill in the blank: The interval from the sample of size 400 will be approximately ________ as the interval from the sample of size 100.
i. One-eighth as wide
ii. One-fourth as wide
iii. One-half as wide
iv. The same width
v. Twice as wide
vi. Four times as wide
vii. Eight times as wide
ANSWER:
Solution:
Step 1 of 3:
A 95% CI for the population mean is computed from a sample of size 400. An another 95% CI will be computed from a sample of size 100 drawn from the same population.
The CI from the sample of size 400 will be approximately _________ as the interval from the sample of Size.