a. First, we must calculate the mean BMD of the reference population. The following is a chart listing BMD reference values from the third National Health and Nutrition Examination Survey (NHANES III) based on white women from 20 to 29 years of age. Find the mean ($\bar{x}$) by adding all the values and dividing by the total. Patient BMD Value (Lumbar Spine) A 1.065 B 1.235 C 0.965 D 0.999 E 1.3454 F 0.987 G 0.935 H 0.997 I 1.989 J 1.024 K 0.975 L 0.976 M 0.98 N 0.965 O 0.899 P 0.875 Q 0.9 Averag
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1.065 + 1.235 + 0.965 + 0.999 + 1.3454 + 0.987 + 0.935 + 0.997 + 1.989 + 1.024 + 0.975 + 0.976 + 0.98 + 0.965 + 0.899 + 0.875 + 0.9 = 17.3264 Show more…
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Bone mineral density test is used to identify bone disease. The bone density test is commonly measured using a z-score, and the population of z-scores is assumed to be normally distributed with a mean of 0 and standard deviation of 1. For a selected subject, find the probability of a bone density test score less than -1.54. For randomly selected subjects, find the probability of a bone density test score greater than b. For randomly selected subjects, find the probability of a bone density test score between 1.33 and 2.33, separating the bottom 25% from the top 75%. d. Find Q, the bone density test score for randomly selected subjects; find the probability that the mean is greater than 0.50.
Adi S.
1. Bone Density Test A bone mineral density test is used to identify a bone disease. The result of a bone density test is commonly measured as a z score, and the population of z scores is normally distributed with a mean of 0 and a standard deviation of 1. a. For a randomly selected subject, find the probability of a bone density test score less than 1.54. b. For a randomly selected subject, find the probability of a bone density test score greater than -1.54. c. For a randomly selected subject, find the probability of a bone density test score between -1.33 and 2.33. d. Find Q1, the bone density test score separating the bottom 25% from the top 75%. e. If the mean bone density test score is found for 9 randomly selected subjects, find the probability that the mean is greater than 0.50.
Shaiju T.
Used identically, bone mineral density (BMD) is commonly measured. The result of a bone density test is normally distributed with a mean score and a standard deviation. For a randomly selected subject, draw a graph and find the probability of a bone density test score less than 1.44. For a randomly selected subject, draw a graph and find the probability of a bone density test score that is greater than -2.02. For a randomly selected subject, draw a graph and find the probability of a bone density test score being between 2.33 and 1.33.
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