26. Blood Types In addition to knowing a person’s blood type, it is important to also know whether their Rh factor is positive or negative.

The blood types of the first 200 individuals to have their blood drawn at a hospital lab on Monday are recorded below.

a. Based on these sample results, does it appear that these two methods of classifying blood types are independent at the a 5.05 level of significance?

b. Calculate the proportion of Rh negative blood types within each of the A, B, AB, and O categories. Are these proportions consistent across the categories?
Does this support your conclusion in part a?

Transcribed Image Text:

Rh Factor A B AB O Positive 62 13 11 76 Negative 10 7 7 14