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Probability of rolled die, blood type and Hindi speakers

1. If two balanced die are rolled, the possible outcomes can be represented as follows:

(1,1) (2,1) (3,1) (4,1) (5,1) (6,1)
(1,2) (2,2) (3,2) (4,2) (5,2) (6,2)
(1,3) (2,3) (3,3) (4,3) (5,3) (6,3)
(1,4) (2,4) (3,4) (4,4) (5,4) (6,4)
(1,5) (2,5) (3,5) (4,5) (5,5) (6,5)
(1,6) (2,6) (3,6) (4,6) (5,6) (6,6)

Determine the probability of rolling the sum of 9 with two balanced die.

2. The blood types for 40 people who agreed to participate in a medical study were as follows:

O A A O O AB O B A O
A O A B O O O AB A A
A B O A A O O B O O
O A O O A B O O A AB

What is the frequency for the A blood type?

(B) For the situation in problem 2 above, what is the relative frequency for the O blood type?

3. In Syed's town there are 11,303 Hindi speakers. In Rajiv's town there are 19,251 Hindi speakers. In Jon's town there are 1,092 Hindi speakers. For this situation, what is the variable under consideration?

Solution Summary

The posting answers three questions on probability of two rolled die, the frequency of blood types and Hindi speakers.

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