Stats
5th Edition
ISBN: 9780135163825
Author: De Veaux, Richard D., Velleman, Paul F., BOCK, David E.
Publisher: Pearson,
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Chapter 16, Problem 21E
To determine
Explain exactly what the statement “The margin of error is plus or minus 4%” means.
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Calculate the 95% confidence intervals for the proportion of children surviving, and the proportion of non-crew adult passengers surviving. We want to use the given data to make inferences about the general population of all large boat crashes, so the data set should be treated as a random sample for this purpose.
Part 2
The 95% confidence interval for survival rate amongst non-crew adults runs from
enter your response here% to
enter your response here%.
(Round to one decimal place as needed. Use ascending order.)
Part 3
The 95% confidence interval for survival rate amongst children runs from
enter your response here% to
enter your response here%.
(Round to one decimal place as needed. Use ascending order.)
Part 4
Test the alternative hypothesis that the proportion of children surviving does not equal 35%, and next, test the alternative hypothesis that the proportion of non-crew adult passengers surviving does not equal 35%. Again, the data set should…
Using the toddler data table in Question 1,
describe the toddlers in the sample with joint
probabilities only.
(300) B(K)-00+300
501
30
smot
dbabib (oor de leng
001-009:(00s)
200, yoogie Fox (D)
ed to diman ed
Right-Handed
Left-Handed
24
Gender
Males
4
Females 2
12
Chapter 16 Solutions
Stats
Ch. 16.2 - 1. You want to poll a random sample of 100...Ch. 16.2 - Prob. 2JCCh. 16.2 - Prob. 3JCCh. 16.3 - Prob. 4JCCh. 16.3 - Prob. 5JCCh. 16.3 - Prob. 6JCCh. 16.3 - Prob. 7JCCh. 16.3 - Prob. 8JCCh. 16.5 - Prob. 9JCCh. 16.5 - Prob. 10JC
Ch. 16.5 - Think some more about the 95% confidence interval...Ch. 16 - Prob. 1ECh. 16 - 2. Marketing The proportion of adult women in the...Ch. 16 - Prob. 3ECh. 16 - Prob. 4ECh. 16 - 5. Living online Pew Research, in 2015, polled a...Ch. 16 - 6. How’s life? Gallup regularly conducts a poll...Ch. 16 - 7. Marriage According to a Pew Research survey,...Ch. 16 - 8. Campus sample For her final project, Stacy...Ch. 16 - Prob. 9ECh. 16 - Prob. 10ECh. 16 - Prob. 11ECh. 16 - 12. Soup A machine is supposed to fill cans with...Ch. 16 - Prob. 13ECh. 16 - 14. Spanking In a 2015 Pew Research study on...Ch. 16 - Prob. 15ECh. 16 - 16. Smoking The Gallup poll described in Exercise...Ch. 16 - Prob. 17ECh. 16 - Prob. 18ECh. 16 - Prob. 19ECh. 16 - 20. Hiring In preparing a report on the economy,...Ch. 16 - Prob. 21ECh. 16 - Prob. 22ECh. 16 - Prob. 23ECh. 16 - 24. More conditions Consider each situation...Ch. 16 - Prob. 25ECh. 16 - 26. More conclusions In January 2002, two students...Ch. 16 - Prob. 27ECh. 16 - 28. Confidence intervals, again Several factors...Ch. 16 - Prob. 29ECh. 16 - Prob. 30ECh. 16 - 31. Mislabeled seafood In 2013 the environmental...Ch. 16 - Prob. 32ECh. 16 - Prob. 33ECh. 16 - 34. Still living online The Pew Research poll...Ch. 16 - Prob. 35ECh. 16 - 36. Take the offer First USA, a major credit card...Ch. 16 - Prob. 37ECh. 16 - 38. Junk mail Direct mail advertisers send...Ch. 16 - Prob. 39ECh. 16 - 40. Local news The mayor of a small city has...Ch. 16 - Prob. 41ECh. 16 - 42. Gambling A city ballot includes a local...Ch. 16 - Prob. 43ECh. 16 - 44. Teachers A 2011 Gallup poll found that 76% of...Ch. 16 - Prob. 45ECh. 16 - Prob. 46ECh. 16 - Prob. 47ECh. 16 - 48. Back to campus II Suppose ACT, Inc. wants to...Ch. 16 - Prob. 49ECh. 16 - Prob. 50ECh. 16 - Prob. 51ECh. 16 - Prob. 52ECh. 16 - Prob. 53ECh. 16 - Prob. 54E
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- appropriate probabilities. 19 Using the data from Table 17-1, are gender and political party independent for this group? nis cow sib signia si Falows grillor le pussarrow_forward11 Using the same toddler data, describe the toddlers with marginal probabilities only. BAY bit of benoliesmas (89 abje' jook stages of te cojota ing ou an out of to cojota ovig ber el ba 3+4=029arrow_forward21 Using the data from the table in Question 1, does the dominant hand differ for male toddlers versus female toddlers? (In other words, are these two events dependent?)arrow_forward
- op In a two-way table with variables A and B, does P(A|B) + P(A|B) = 1? பே 69 6 work as m 3 atavs ow to portabagabat sot gaisarrow_forwardIn a two-way table with variables A and B, does P(A|B)+P(A|B)=1? dsins/Ispino936) 1 durab ALED a to gilidadost Earrow_forwardpreference are dependent (you even have to look at the males). Using the bumper sticker data in the first example problem in this chapter, are car age and number of bumper stickers related (In other words, are these two events dependent?) d insbusqabni oss agit ads bms gliw woy tadi validadong ada 15W wex s m ad ow MP gliw Boy 1st yilidadong at al terW .d Shsed smo viaxe 5X9 of pe 012 from 12 or to HOM qose Aunt swam to prepants M&arrow_forward
- 23 வ dous biops Which marginal probabilities that you find in a two-way table should sum to 1? 著arrow_forwardUsing the toddler data from the table in Question 1 and appropriate probability notation, do the following: a. Compare the right-handed female and male toddlers in the sample, using condi- tional probabilities (only). b. Compare the right-handed toddlers asid in the sample, using conditional probabilities (only).dependent abni sis & bas bax bensqged snavs med) galworl andarrow_forwardUsing the toddler data from the table in Question 1 and appropriate probability notation, identify and calculate the following: a. What percentage of the male toddlers are right-handed? te b. What percentage of the female toddlers are right-handed? c. What percentage of the right-handed toddlers are male? d. What percentage of the right-handed toddlers are female?arrow_forward
- 10 Using the toddler data from the table in Question 1 and the appropriate probability Tonotation, identify and calculate ther s following: a. What percentage of the toddlers are right-handed? b. now to What percentage of the toddlers are female? female? da boit vom wo c. What proportion of the toddlers are left-handed? d. What's the chance of finding a male toddler from the sample? [10arrow_forward9 Using the car data from the bumper sticker table earlier in this chapter and the appro- priate probability notation, identify and calculate the following: a. What percentage of the cars are newer cars? b. What's the proportion of older cars? c. What percentage of the cars have a lot of bumper stickers? d. What's the probability that a car doesn't have a lot of bumper stickers?arrow_forwardSuppose that you roll a single die two times, and the trials are independent. What is the chance of rolling two 1s?arrow_forward
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