Table below report the number of observation of males and females who received a blood test. Their blood types were recorded. Calculate the probability in the question below. Blood types Males Females Total Type O 60 50 110 Type A 50 50 100 Type B 60 40 100 Type AB 130 140 270 Total: 300 280 580 If we select a subject who had a blood test at random, what is the probability that the person has blood type B AND blood type A?

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Table below report the number of observation of males and females who received a blood test. Their blood types were recorded. Calculate the probability in the question below.

Blood types

Males

Females

Total

Type O

60

50

110

Type A

50

50

100

Type B

60

40

100

Type AB

130

140

270

Total:

300

280

580

  1. If we select a subject who had a blood test at random, what is the probability that the person has blood type B AND blood type A?
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