The Records department of a large hospital states that the mean age of its patients is 45 yrs. Records of a random sample of 100 patients gave a mean age of 48.4 yrs. Using a population standard deviation of 18 yrs., test at the 5% significance level whether there is evidence that the Records department is incorrect. Proceed as follows: (a) State both the null and alternate hypotheses in symbolic form (b) Determine the test statistic (c) Using Excel or otherwise, calculate the p -value for this test (d) State your conclusion with a reason
The Records department of a large hospital states that the mean age of its patients is 45 yrs. Records of a random sample of 100 patients gave a mean age of 48.4 yrs. Using a population standard deviation of 18 yrs., test at the 5% significance level whether there is evidence that the Records department is incorrect. Proceed as follows: (a) State both the null and alternate hypotheses in symbolic form (b) Determine the test statistic (c) Using Excel or otherwise, calculate the p -value for this test (d) State your conclusion with a reason
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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