Every person has blood type O, A, B, or AB. A random group of people are blood-typed, and the results are shown in the table. A 2-column table with 4 rows is shown. The first column is labeled Blood Type with entries O, A, B, AB. The second column is labeled Number of People with entries 22, 20, 6, 2. Use the table to determine the following probabilities. The probability that a randomly chosen person from this group has type B is . The probability that a randomly chosen person from this group has type AB is . The probability that a randomly chosen person from this group has type B or type AB blood is .

The probability tells the chances of an event occurring. The probability that a randomly chosen person from this group has type B or type AB blood is 0.16.

What is Probability?

The probability helps us to know the chances of an event occurring.

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]

As the table shows The first column is labelled Blood Type with entries O, A, B, AB. The second column is labelled Number of People with entries 22, 20, 6, 2. Therefore, the total number of people who participated in the survey is 50.

A.) The probability that a randomly chosen person from this group has type B

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\\rm Probability=\dfrac{\text{Number of people with B group}}{\text{Total Number of people in the survey}}\\\\\\\rm Probability=\dfrac{6}{50} = 0.12[/tex]

B.) The probability that a randomly chosen person from this group has type AB.

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\\rm Probability=\dfrac{\text{Number of people with AB group}}{\text{Total Number of people in the survey}}\\\\\\\rm Probability=\dfrac{2}{50} = 0.04[/tex]

C.) The probability that a randomly chosen person from this group has type B or type AB blood.

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\\rm Probability=\dfrac{\text{Number of people with B and AB group}}{\text{Total Number of people in the survey}}\\\\\\\rm Probability=\dfrac{6+2}{50} = 0.16[/tex]

Hence, The probability that a randomly chosen person from this group has type B or type AB blood is 0.16.

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