whether using the one-proporti one-proportion z priate, use the = level.
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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Transcribed Image Text:Given below are the number of successes and sample size for a simple random sample from a population.
x=8, n = 50, 98% level
a. Determine the sample proportion.
b. Decide whether using the one-proportion z-interval procedure is appropriate.
c. If appropriate, use the one-proportion z-interval procedure to find the confidence interval at the specified
confidence level.
d. If appropriate, find the margin of error for the estimate of p and express the confidence interval in terms of
the sample proportion and the margin of error.
a. p= 0.16
(Type an integer or a decimal. Do not round.)
b. Is the one-proportion z-interval procedure appropriate? Select all that apply.
A. The procedure is appropriate because the necessary conditions are satisfied.
B. The procedure is not appropriate because the sample is not a simple random sample.
C. The procedure is not appropriate because n-x is less than 5.
D. The procedure is not appropriate because x is less than 5.
c. Select the correct choice below and, if necessary, fill in the answer boxes within your choice.
OA. The 98% confidence interval is from to.
(Round to three decimal places as needed. Use ascending order.)
O B. The one-proportion z-interval procedure is not appropriate.
d. Select the correct choice below and, if necessary, fill in the answer boxes within your choice.
O A. The margin of error is . The 98% confidence interval is ±
(Type integers or decimals. Round to three decimal places as needed.)
O B. The one-proportion z-interval procedure is not appropriate.
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