A manager of a pizza restaurant has changed the restaurant's delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 25 minutes A sample of 36 orders using the new delivery process yields as 224 minutes and a sample standard deviation of 6 minutes Complete parts (a) through (d) below a. Using the critical value approach, at the 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes? State the null and alternative hypotheses for this test OA. Hg us22 4 H p> 224 OD. H > 25 H, ps25 OB. H ps25 H p> 25 OE H p2 25 H p<25 OC. H pa224 H p<224 OF. H u<25 H, p2 25 What is the test statistic for this test? ISTAT O (Type an integer or a decimal Round to two decimal places as needed) What is(are) the critical value(s) for this test? (Type an integer or a decimal Round to two decimal places as needed Use commas to separate your answers as needed) What is the conclusion for this test? Since the test statistic is than the critical value vthe null hypothesis and conckude that there is vevidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes b. Using the p-value approach at the 0.05 level of significance. is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes? What is the p-value for this test? pvalue Type an integer or a decimal Round to three decimal places as needed) wode What is the conclusion for this test?
A manager of a pizza restaurant has changed the restaurant's delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 25 minutes A sample of 36 orders using the new delivery process yields as 224 minutes and a sample standard deviation of 6 minutes Complete parts (a) through (d) below a. Using the critical value approach, at the 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes? State the null and alternative hypotheses for this test OA. Hg us22 4 H p> 224 OD. H > 25 H, ps25 OB. H ps25 H p> 25 OE H p2 25 H p<25 OC. H pa224 H p<224 OF. H u<25 H, p2 25 What is the test statistic for this test? ISTAT O (Type an integer or a decimal Round to two decimal places as needed) What is(are) the critical value(s) for this test? (Type an integer or a decimal Round to two decimal places as needed Use commas to separate your answers as needed) What is the conclusion for this test? Since the test statistic is than the critical value vthe null hypothesis and conckude that there is vevidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes b. Using the p-value approach at the 0.05 level of significance. is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes? What is the p-value for this test? pvalue Type an integer or a decimal Round to three decimal places as needed) wode What is the conclusion for this test?
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Transcribed Image Text:A manager of a pizza restaurant has changed the restaurant's delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 25 minutes A sample of 36 orders using the new delivery process yields a sample mea
22.4 minutes and a sample standard deviation of 6 minutes. Complete parts (a) through (d) below.
a. Using the critical value approach, at the 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes?
State the null and alternative hypotheses for this test.
O A. Ho HS224
OC. Ho u2 22.4
H, u< 22.4
OF. Ho: u< 25
H1: p2 25
O B. Hg Hs25
H, p> 22.4
H, p> 25
O D. Ho u> 25
H, ps25
O E. Ho u2 25
H, u<25
What is the test statistic for this test?
ISTAT
(Type an integer or a decimal. Round to two decimal places as needed)
What is(are) the critical value(s) for this test?
(Type an integer or a decimal Round to two decimal places as needed Use commas to separate your answers as needed.)
What is the conclusion for this test?
Since the test statistic is
V than the critical value
v the null hypothesis and conclude that there is
v evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes
b. Using the p-value approach, at the 0 05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes?
What is the p-value for this test?
p-value = (Type an integer or a decimal Round to three decimal places
needed)
Windowe Ekinlest
What is the conclusion for this test?
Click to select your answer(s)
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