Insert Page Layout Formulas Deta Review View Tel me what you want to do General
ID: 2936751 • Letter: I
Question
Insert Page Layout Formulas Deta Review View Tel me what you want to do General Accent Insert Delete Py mat Painter and E-1Merge & Cente" s-% , uigl Conditional For B 1 u . . a-. as 40%.Accent4 40% Accents Formatting Table Font Alignment Number Styles Cells sinessweek took a random sample of business people scheduled to travel on an international flight and a random sample of business people heduled to travel on a domestic flight and asked them whether they purchased a first class, business class, or economy class ticket. (See exercise 21 npage 515 of your textbook for a similar problem.) Use the data in the Flight sheet in this workbook to generate excel output to answer the f uestions. Each orange numerical answer cell below MUST reference Excel output cells in the Flight sheet. Question 3A Does the data suggest the proportion of International business flyers who purchase business class tickets is greater than the proportion of Domestic business flyers step 1 00: nter Ha: Step 2 tep 3 Full in row 13s if the hypothess is one Reject Ho if ll in row 142 Reject Ho ifExplanation / Answer
Answer to the question)
The claim is that Proportion of international flyers who buy business class > proportion of domestic flyers
Thus the null hypothesis Ho: P (inter) P(Domestic) or P(inter) - P(domestic) 0
Alternate Hypothesis : Ha : P(inter) > P(domestic) or P(inter) - P(domestic) > 0
.
Since it is a question related to difference of proportions , we use the Z statistic
Hence we need the Z critical values
it is a right tailed test
Alpha = 0.005, so Z critical = 2.575
The critical region or rejection region is : Z > 2.575
Thus reject the null , if the Z statistic you get is more than 2.575