With Individual Lines At Its Various Windows A Post Office Experiments With A Single Main Waiting Line And Finds That 1 (36.12 KiB) Viewed 26 times
With Individual Lines At Its Various Windows A Post Office Experiments With A Single Main Waiting Line And Finds That 2 (58.7 KiB) Viewed 26 times
With individual lines at its various windows, a post office experiments with a single, main waiting line and finds that for a random sample of 25 customers, the waiting times for customers have a standard deviation of 3.5 minutes. Use this information to construct a 95% confidence interval estimate of the true standard deviation of waiting times. Chi-Square Critical Values Table de a. What is the point estimate? b. Left x? critical value: c. Right x? critical value: d. Lower CI limit: e. Upper CI limit:
Test the claim that the proportion of people who own cats is smaller than 10% at the 0.025 significance level. The null and alternative hypothesis would be: Ho:p = 0.1 Hol = 0.1 Ho:p > 0.1 Hou < 0.1 Hou > 0.1 Ho:p < 0.1 H:P +0.1 H1:n +0.1 Hı:p < 0.1 Hiiu > 0.1 H1:< 0.1 H1 :p > 0.1 O O O o The test is: right-tailed two-tailed left-tailed O O Based on a sample of 300 people, 2% owned cats The p-value is: (to 2 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis
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