STATS:DATA+MODELS(LL)-W/ACCESS>CUSTOM<
21st Edition
ISBN: 9780137643219
Author: DeVeaux
Publisher: PEARSON
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Chapter 22, Problem 40E
a.
To determine
Explain whether the data are fall under survey study, a retrospective study, a prospective study or an experiment.
b.
To determine
Check the appropriate test among, test for homogeneity or independence for the variables.
c.
To determine
Check whether there is evidence of an association between the amount of fish in a man’s diet and his risk of developing prostate cancer.
d.
To determine
Explain whether the study, prove that the consumption of fish does not prevent prostate cancer or not.
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A researcher wishes to estimate, with 90% confidence, the population proportion of adults who support labeling
legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 4% of the true proportion.
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...
(a) What is the minimum sample size needed assuming that no prior information is available?
n =
(Round up to the nearest whole number as needed.)
The table available below shows the costs per mile (in cents) for a sample of automobiles. At a = 0.05, can you conclude that at least one mean
cost per mile is different from the others?
Click on the icon to view the data table.
Let Hss, HMS, HLS, Hsuv and Hмy represent the mean costs per mile for small sedans, medium sedans, large sedans, SUV 4WDs, and minivans
respectively. What are the hypotheses for this test?
OA. Ho: Not all the means are equal.
Ha Hss HMS HLS HSUV HMV
B. Ho Hss HMS HLS HSUV = μMV
Ha: Hss *HMS *HLS*HSUV * HMV
C. Ho Hss HMS HLS HSUV =μMV
= =
H: Not all the means are equal.
D. Ho Hss HMS
HLS HSUV HMV
Ha Hss HMS
HLS =HSUV = HMV
Question: A company launches two different marketing campaigns to promote the same product in two different regions. After one month, the company collects the sales data (in units sold) from both regions to compare the effectiveness of the campaigns.
The company wants to determine whether there is a significant difference in the mean sales between the two regions. Perform a two sample T-test
You can provide your answer by inserting a text box and the answer must include:
Null hypothesis,
Alternative hypothesis,
Show answer (output table/summary table), and
Conclusion based on the P value.
(2 points = 0.5 x 4 Answers)
Each of these is worth 0.5 points. However, showing the calculation is must. If calculation is missing, the whole answer won't get any credit.
Chapter 22 Solutions
STATS:DATA+MODELS(LL)-W/ACCESS>CUSTOM<
Ch. 22.3 - 1. Why do we need the control group?
Ch. 22.3 - Prob. 2JCCh. 22.3 - Prob. 3JCCh. 22.3 - Prob. 4JCCh. 22.3 - Prob. 5JCCh. 22.3 - Prob. 6JCCh. 22.4 - Prob. 7JCCh. 22.4 - Prob. 8JCCh. 22.4 - Prob. 9JCCh. 22 - Prob. 1E
Ch. 22 - 2. Bank cards At a major credit card bank, the...Ch. 22 - 3. Human births, again For the births in Exercise...Ch. 22 - 4. Bank cards, again For the customers in Exercise...Ch. 22 - 5. Customer ages An analyst at a local bank...Ch. 22 - 6. Bank cards, once more A market researcher...Ch. 22 - Prob. 7ECh. 22 - Prob. 8ECh. 22 - Prob. 9ECh. 22 - 10. Iliad weapons The Iliad also reports the cause...Ch. 22 - Prob. 11ECh. 22 - 12. Which test, again? For each of the following...Ch. 22 - 13. Dice After getting trounced by your little...Ch. 22 - 14. M&M’s As noted in an earlier chapter, Mars...Ch. 22 - Prob. 15ECh. 22 - 16. Mileage A salesman who is on the road visiting...Ch. 22 - 17. NYPD and race Census data for New York City...Ch. 22 - Prob. 18ECh. 22 - 19. Fruit flies Offspring of certain fruit flies...Ch. 22 - 20. Pi Many people know the mathematical constant...Ch. 22 - Prob. 21ECh. 22 - 22. Lottery numbers The fairness of the South...Ch. 22 - Prob. 23ECh. 22 - Prob. 24ECh. 22 - Prob. 25ECh. 22 - Prob. 26ECh. 22 - 27. Childbirth, part 3 In Exercises 23 and 25,...Ch. 22 - 28. Does your doctor know? (part 3) In Exercises...Ch. 22 - Prob. 29ECh. 22 - Prob. 30ECh. 22 - Prob. 31ECh. 22 - Prob. 32ECh. 22 - Prob. 33ECh. 22 - Prob. 34ECh. 22 - Prob. 35ECh. 22 - 36. NYPD again Examine and comment on this table...Ch. 22 - Prob. 37ECh. 22 - 38. Car origins A random survey of autos parked in...Ch. 22 - 39. Montana A poll conducted by the University of...Ch. 22 - 40. Fish diet Medical researchers followed 6272...Ch. 22 - Prob. 41ECh. 22 - 42. Working parents In April 2009, Gallup...Ch. 22 - Prob. 43ECh. 22 - Prob. 44ECh. 22 - Prob. 45ECh. 22 - 46. Full moon, next phase In Exercise 44, you...Ch. 22 - Prob. 47ECh. 22 - Prob. 48ECh. 22 - Prob. 49ECh. 22 - Prob. 50E
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