Question

A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is un minutes. Historically, the standard deviation for delivery time is 11.6 minutes. Using a = 0.01, complete parts a and bb a. Does this sample provide enough evidence to support the delivery time claim made by the pizza place? Determine the null and alternative hypotheses. Ho: H, :μ The Z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed. Use a comma to separate answers as needed.) Because the test statistic the null hypothesis. b. Determine the p-value for this test. The p-value is (Round to three decimal places as needed.)

Answer 1

sal! Hypothesis - Ho! HZ 45 Ha: M < 45 Z - 41.7-45 -1.8436589918 X-M olm 11.6.149 Z ~ -1.84 :: Rejict Ho it z < critical vole} The critical value at aa 0.01 - Za = -Zoool = -2.326 -2.33 Because the test statistic is greater than critical value. So, we fail to reject the null hypothesis. (b) P-value P(Z <-1.84) 0.0399 a 0.033