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Question: Hallux abducto valgus (call it HAV)is a deformation of the big toe that often requires surgery. Doctors used X-rays to measure the angle (in degrees) of deformity in 38 patients under the age of 21 who came to a medical center for surgery to correct HAV. The angle is a measure of the seriousness of the deformity. Here are the data:
28 32 25 34 38 26 25 18 30 26 28 13 2021 17 16 21 23 14 32 25 21 22 20 18 2616 30 30 20 50 26 28 31 38 38 21
It is reasonable to regard these patients as a random sample of young patients who require HAV surgery.
(a) Construct a 95% confidence interval for the mean HAV angle in the population of all such patients.
(b) Construct a histogram and assess the shape, center, and spread. Remove the patient(s) that who are outliers.
(c) Construct a 95% confidence interval for the population mean based on the remaining patients after you drop the outlier(s).
(d) Compare your interval in (a) with your interval in (c). What is the most important effect of removing the outlier(s)?
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a random sample of 500 connecting rod pins contains 65 nonconforming units. estimate the process fraction
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We suggest that you use the graphical approach to CVP analysis to solve the following problem, but you may use any other method to find the answer.
Effect of Family Income on a Student's S.A.T. Score and salary Discrimination in the National Basketball Association
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