Hypothesis Test 2:
Do airport car rental agencies charge lower rates, on average, in San Francisco than in San Jose?
Conduct a test of this question with a 3% level of significance.
.
The table shows weekly car rental rates
in San Francisco and San Jose for a sample of rental companies and car types.
For each company/car size combination in the sample, the rates are shown for both cities.
The sample rates in the table were quoted
on Travel: Airfares, hotels, vacations, cruises, car rentals and more at Travelocity.com on 11/27/2007
for rentals at airport rental outlets
for the week 12/1–12/8/2007.
We will use this data as a sample of the population of all models of cars available for rent from all airport car rental agencies in San Francisco and San Jose.
Using a 3% level of significance, perform a hypothesis test to determine if airport car rental agencies charge lower rates, on average, in San Francisco than in San Jose.
Company
Car Size
San FranciscoSan Jose
Alamo
economy
238257
Avis
economy
258277
Budget
economy
238257
Dollar
economy
99170
Enterprise
compact
88172
Hertz
compact
267278
National
compact
257268
Thrifty
compact
99172
Alamo
mid
261281
Dollar
mid
95173
Hertz
mid
281301
Budget
mid
261281
Avis
full
317321
Enterprise
full
105174
National
full
307312
Thrifty
full
109.174
Answer the following questions. Your answers must be typed out in between each question.
1. Identify and define the parameter.
-µsf-µsj
2. Identify and define the random variable.
- x bar sf- x bar sj
3. What distribution will you use? Explain why.
4. Circle the correct type of test: Two-tailed Right-Tailed Left-Tailed
5. Write the hypotheses:
Ho: __µsf≥µsj_______________________ Ha: ____µsf<µsj_________________________
6. What calculator software instruction will you use after STAT – TEST? ______________________________
7. Identify the symbol and value of your test-statistic: ______________________________
8. Find the p-value: ______________________________
9. Write a sentence that clearly explains the meaning of the p-value in the context of this problem.
i'm really clueless
please help
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