Essentials of Statistics (5th Edition)
5th Edition
ISBN: 9780321924599
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 11.3, Problem 6BSC
To determine
To test: Whether there is sufficient evidence to reject the claim that success is independent of the type of treatment or not.
To explain: The result suggest about treating carpal tunnel syndrome.
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A study was made of 425 children who were hospitalized as a result of motor vehicle crashes. Among 300 children who were not using seat belts, 50 were
injured severely. Among 125 children using seat belts, 10 were injured severely (based on data from "Morbidity Among Pediatric Motor Vehicle Crash
Victims: The Effectiveness of Seat Belts," by Osberg and Di Scala, American Journal of Public Health, Vol. 82, No. 3).
For this problem we want to know, is there sufficient sample evidence to conclude, at the 0.05 significance level, that the proportion of severe injuries is
higher for children not wearing seat belts?
Let pi be the proportion of severe injuries among all children not wearing seatbelts and who were involved in crashes.
Let p2 be the proportion of severe injuries among all children wearing seatbelts and who were involved in crashes.
Which is the proper expression of Ho?
P1 > P2
P1 P2
Calculate p1 to 4 decimal places:
Calculate p2 to 4 decimal places:
Calculate the pooled sample…
Splint or Surgery? A randomized controlled trial was designed to compare effectiveness of splinting versus
surgery in the treatment of carpal tunnel syndrome. Results are given in the table below (based on data from
"Splinting vs Surgery in the Treatment of Carpal Tunnel Syndrome," by Gerritsen et al., Journal of the
American Medical Association, Vol. 288, No. 10). The results are based on evaluations made one year after
treatment. Using a 0.01 significance level, test the claim that success is independent of the type of treatment.
Successful Treatment
Unsuccessful Treatment
Splint Treatment
Surgery Treatment
60
23
67
6.
Họ: p = 0 (Success is dependent of the type of treatment.)
HA: p +0 (Success is independent of the type of treatment.)
Hypothesis Test:
(row total) x (column total)
(Expected count) E =
table total
Test Statistic:
(01- E1)?, (02- E2)?
+
X = EE
(0-E)²
(Ok- Ek)²
1-א
X =
+... +
E1
E2
Ek
P-value
df= (r - 1)(c - 1) =
a =
Decision:
Conclusion:
A study was made of 413 children who were hospitalized as a result of motor vehicle crashes. Among 290 children who were not using seat
belts, 60 were injured severely. Among 123 children using seat belts, 16 were injured severely (based on data from "Morbidity Among Pediatric
Motor Vehicle Crash Victims: The Effectiveness of Seat Belts," by Osberg and Di Scala, American Journal of Public Health, Vol. 82, No. 3).
For this problem we want to know, is there sufficient sample evidence to conclude, at the 0.05 significance level, that the proportion of severe
injuries is higher for children not wearing seat belts?
Let pi be the proportion of severe injuries among all children not wearing seatbelts and who were involved in crashes.
Let p2 be the proportion of severe injuries among all children wearing seatbelts and who were involved in crashes.
Which is the proper expression of Ho?
Pi = P2
O Pi P2
Which is the proper expression of H1?
O pi P2
Calculate p1 to 4 decimal places:
Calculate p,…
Chapter 11 Solutions
Essentials of Statistics (5th Edition)
Ch. 11.2 - Prob. 1BSCCh. 11.2 - Prob. 2BSCCh. 11.2 - Prob. 3BSCCh. 11.2 - Prob. 4BSCCh. 11.2 - Prob. 5BSCCh. 11.2 - Prob. 6BSCCh. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 9BSCCh. 11.2 - In Exercises 5-20, conduct the hypothesis test and...
Ch. 11.2 - Prob. 11BSCCh. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 13BSCCh. 11.2 - Prob. 14BSCCh. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 17BSCCh. 11.2 - American Idol Contestants on the TV show American...Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 20BSCCh. 11.2 - Prob. 21BSCCh. 11.2 - Prob. 22BSCCh. 11.2 - Benfords Law. According to Benfords law, a variety...Ch. 11.2 - Prob. 24BSCCh. 11.2 - Testing Goodness-of-Fit with a Normal Distribution...Ch. 11.3 - Smoking Cessation The accompanying table...Ch. 11.3 - Prob. 2BSCCh. 11.3 - Degrees of Freedom and Critical Value For the...Ch. 11.3 - Prob. 4BSCCh. 11.3 - Prob. 5BSCCh. 11.3 - Prob. 6BSCCh. 11.3 - Prob. 7BSCCh. 11.3 - Prob. 8BSCCh. 11.3 - In Exercises 5-18, test the given claim. 9. Is...Ch. 11.3 - Prob. 10BSCCh. 11.3 - In Exercises 5-18, test the given claim. 11....Ch. 11.3 - Prob. 12BSCCh. 11.3 - Soccer Strategy In soccer, serious fouls in the...Ch. 11.3 - Prob. 14BSCCh. 11.3 - Prob. 15BSCCh. 11.3 - In Exercises 5-18, test the given claim. 16....Ch. 11.3 - Prob. 17BSCCh. 11.3 - Prob. 18BSCCh. 11.3 - Prob. 19BSCCh. 11.3 - Prob. 20BSCCh. 11.3 - Prob. 21BBCh. 11.3 - Using Yatess Correction for Continuity The...Ch. 11.4 - In Exercises 1-4, use the following listed chest...Ch. 11.4 - Prob. 2BSCCh. 11.4 - In Exercises 1-4, use the following listed chest...Ch. 11.4 - Prob. 4BSCCh. 11.4 - In Exercises 516, use analysis of variance for the...Ch. 11.4 - In Exercises 516, use analysis of variance for the...Ch. 11.4 - Highway Fuel Consumption Data Set 14 in Appendix B...Ch. 11.4 - City Fuel Consumption Data Set 14 in Appendix B...Ch. 11.4 - Head Injury Crash Test Data Exercises 14 use chest...Ch. 11.4 - Pelvis Injury Crash Test Data Exercises 14 use...Ch. 11.4 - Prob. 11BSCCh. 11.4 - Prob. 12BSCCh. 11.4 - Prob. 13BSCCh. 11.4 - Prob. 14BSCCh. 11.4 - Prob. 15BSCCh. 11.4 - Prob. 16BSCCh. 11.4 - Tukey Test A display of the Bonferroni test...Ch. 11 - Prob. 1CQQCh. 11 - Prob. 2CQQCh. 11 - Questions 1-5 refer to the sample data in the...Ch. 11 - Prob. 4CQQCh. 11 - Prob. 5CQQCh. 11 - Prob. 6CQQCh. 11 - Prob. 7CQQCh. 11 - Prob. 8CQQCh. 11 - Prob. 9CQQCh. 11 - Questions 6-10 refer to the sample data in the...Ch. 11 - Auto Fatalities The table below lists auto...Ch. 11 - Prob. 2RECh. 11 - Prob. 3RECh. 11 - Prob. 4RECh. 11 - Prob. 5RECh. 11 - Home Field Advantage Winning-team data were...Ch. 11 - Prob. 7RECh. 11 - Prob. 1CRECh. 11 - Prob. 2CRECh. 11 - ICU Patients Listed below are the ages of randomly...Ch. 11 - Prob. 4CRECh. 11 - Boats and Manatees The table below lists the...Ch. 11 - Forward Grip Reach and Ergonomics When designing...Ch. 11 - Honesty Is the Best Policy In a USA Today survey...Ch. 11 - Probability and Honesty Based on the sample...Ch. 11 - Use Statdisk, Minitab, Excel, StatCrunch, a...Ch. 11 - Prob. 1FDD
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