A recent survey showed that from a sample of 500 packages delivered by a postal service, 480 were delivered on time. a) construct a 95% confidence interval for the portion of all packages that are delivered on time by the postal services b) The manager of the postal services claims that 98 percent of their mail are delivered on time. he wants to test at the 1% significance level to determine wether the true proportion is ess than 98 percent (iv) state the decision rule (v) give your decision based on the available sample evidence (vi) hence state your
A recent survey showed that from a sample of 500 packages delivered by a postal service, 480 were delivered on time. a) construct a 95% confidence interval for the portion of all packages that are delivered on time by the postal services b) The manager of the postal services claims that 98 percent of their mail are delivered on time. he wants to test at the 1% significance level to determine wether the true proportion is ess than 98 percent (iv) state the decision rule (v) give your decision based on the available sample evidence (vi) hence state your
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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1). A recent survey showed that from a sample of 500 packages delivered by a postal service, 480 were delivered on time.
a) construct a 95% confidence interval for the portion of all packages that are delivered on time by the postal services
b) The manager of the postal services claims that 98 percent of their mail are delivered on time. he wants to test at the 1% significance level to determine wether the true proportion is ess than 98 percent
(iv) state the decision rule
(v) give your decision based on the available sample evidence
(vi) hence state your conclusion
Typewritten please
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