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Question # 1 Rothenberg et al. (2004) investigated the effectiveness of using the Hologic Sahara Sonometer, a...

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Statistics

Question # 1

Rothenberg et al. (2004) investigated the effectivenessof using the Hologic Sahara Sonometer, a portable device thatmeasures bone mineral density (BMD) in the ankle, in predicting afracture. They used a Hologic estimated bone mineral density valueof

.57 as a cutoff. The results yielded the followingdata:




Fracture Present (D)

No Fracture Present (~D)

Total

BMD = 0.57 (T)

217

667

884

BMD > 0.57 (~T)

70

333

403

Total

287

1000

1287

a. Compute the Sensitivity of the test. (6points)

b. Compute the Specificity of the test. (6points)

c. Compute the Positive Predictive Value (6points)

Question # 2

According to the most recent Davenport student profile,28% of students are male. Given a sample of 15students:

a. Find the probability that none are male. (6points)

b. Find the probability that 10 are male. (6points)

c. Find the probability that at least six are male. (6points)


Answer & Explanation Solved by verified expert
4.3 Ratings (631 Votes)
Question 1aSensitivity is given bybSpecificity is    See Answer
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