11.33 Osteoporosis. Osteoporosis is a condition in which the bones become brittle due to loss of minerals. To diagnose os- teoporosis, an elaborate apparatus measures bone mineral den sity (BMD). BMD is usually reported in standardized form The standardization is based on a population of healthy young adults. The World Health Organization (WHO) criterion for osteoporosis is a BMD 2.5 or more standard deviations below the mean for young adults. BMD measurements in a popula- tion of people who are similar in age and sex roughly follow a Normal distribution.? (a) What percent of healthy young adults have osteoporosis by the WHO criterion? (b) Women aged 70 to 79 are, of course, not young adults. The mean BMD in this age is about -2 on the standard scale for young adults. Suppose that the standard deviation is the same as for young adults. What percent of this older population has osteoporosis!

11.33 Osteoporosis. Osteoporosis is a condition in which the bones become brittle due to loss of minerals. To diagnose os- teoporosis, an elaborate apparatus measures bone mineral den sity (BMD). BMD is usually reported in standardized form The standardization is based on a population of healthy young adults. The World Health Organization (WHO) criterion for osteoporosis is a BMD 2.5 or more standard deviations below the mean for young adults. BMD measurements in a popula- tion of people who are similar in age and sex roughly follow a Normal distribution.? (a) What percent of healthy young adults have osteoporosis by the WHO criterion? (b) Women aged 70 to 79 are, of course, not young adults. The mean BMD in this age is about -2 on the standard scale for young adults. Suppose that the standard deviation is the same as for young adults. What percent of this older population has osteoporosis!

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Number 3
(i) Determine if the hypothesis test is a one tailed test or two tailed. (ii) Find the P-value. Round the answer to four decimal places. (iii) Make the decision and summarize the results.
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You want to compare differences in prior arrests across ethnicity in your study, you measured ethnicity as white =0 black =1 hispanic=2, and other =3. Prior arrests was recorded as the number of prior arrests. which test would you perform to see if arrests differ across diffrent ethnic categories? A. ANOVA B. T-test
Change in the average birth weight of babies born in the U.S. since 1990, in ounces 0 -0.5- -1.0 -1.5 1990 '95 ¹00 "Born between 37 and 41 and net including multiple births Source: Obstetrics and Gynecology prvy. 105 A local hospital wanted to see if the claim was true and randomly sampled 19 baby's weights and found an average weight of 7 pounds. Test the claim using a 10% level of significance that the mean weight significantly smaller than the national average of 7.5 pounds. Use the population standard deviation of 1.25 pounds. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols.) pounds Ho: Select an answer♥ ?✔ H₁: Select an answer? Based on the hypotheses, find the following: Test Statistic = p-value = pounds The correct decision is to [Select an answer The correct summary would be: [Select an answer weight significantly smaller than the national average of 7.5 pounds. What is the type I error in this situation? Select an answer…
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