Explore BrainMass
Share

Probability of selecting blood type A+

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

1. The distribution of blood types for 100 Americans is listed in the table. If one donor is selected at random, find the probability of selecting with blood type A+.

blood type O+ O- A+ A- B+ B- AB+ AB-
number 37 6 34 6 10 2 4 1

A. 0.45
B. 0.34
C. 0.68
D. 0.4

The P(A) = 3/5. Find the odds in favor of A.

A. l2:5
B. 2:3
C.3:2
D.5:2

A group of students were asked if they carry a credit card. The responses are listed in the table.

Class Credit Card carrier Not a Credit Card Carrier Total
Freshman 18 42 60
Sophomore 40 0 40
Total 58 42 100

If a student is selected at random, find the probability that he or she owns a credit card given that the is a sophomore. Round your answer to three decimal places.

A. 0.000
B. 0.400
C. 1.000
D. 0.690

Uses Bayes theorem to solve this problem A storeowner purchases steroes from two companies. From Company A, 550 stereos are purchased and 1% are found to be defective. From Company B, 850 stereos are purchased and 6% are found to be defective. Given that a stereo is defective, find the probability that it came from Company A.

A. 11/113
B. 17/113
C. 102/113
D. 66/113

© BrainMass Inc. brainmass.com October 25, 2018, 3:50 am ad1c9bdddf
https://brainmass.com/statistics/bayesian-probability/probability-of-selecting-blood-type-a-355891

Solution Summary

The solution provides answers to multiple choice questions on probability.

$2.19