A Study Examined The Effectiveness Of An Ear Molding Technique Used To Correct Ear Deformities In Newborns Without The N 1 (46.18 KiB) Viewed 25 times
A Study Examined The Effectiveness Of An Ear Molding Technique Used To Correct Ear Deformities In Newborns Without The N 2 (46.18 KiB) Viewed 25 times
A study examined the effectiveness of an ear-molding technique used to correct ear deformities in newborns without the need for surgery. A plastic mold (the EarWell Infant Ear Correction System) was placed around the deformed ear shortly after birth for about two weeks. The study reports that 152 of 158 procedures were successful.14 Use this information to answer Exercises 19.19 to 19.21 19.19 What is the sample proportion of successful procedures? a. 1.52 b. 0.962 c. 0.06 19.20 We would like to estimate with 95% confidence the true proportion of successful car-molding procedures among all newborns needing ear-deformity correction. We can use a. either the large-sample method or the plus four method because the sample size is large. b. the plus four method but not the large-sample method because the counts of successes and failures in the sample are too small but the sample size is large enough. c. neither method because the sample size is too small 19.21 What is the plus four 95% confidence interval for the true proportion of successful ear-molding procedures among all newborns needing ear-deformity correction? a. (152, 158) b.(0.932,0.992) c. (0.917,0.984)
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