ellogan1987 ellogan1987

17-07-2017
Mathematics

contestada

In a study of blood donors, 200 were classified as group O and 250 had a classification other than group O. What is the probability that a person will have group O blood? (Enter your answer as a fraction.)

Respuesta :

sergibcnusa sergibcnusa

17-07-2017

Probability of O = (number with O)/(Total number of cases)

It always works like this.

P(O) = 200/450 = 4/9

Answer Link

ACCESS MORE

Otras preguntas

Write an expression for "7 less than y."

On Monday there were 92 fish in the fish tank. On Tuesday 4 fish were sold, on Wednesday 1 fish was sold, on Thursday 4 fish were added to the tank, and on Frid

A researcher wants to observe preschoolers at a local public playground to evaluate levels of cooperation. The researcher will not interact with the children or

Identify the zeros of f(x) = (x + 1)(x − 8)(5x + 2). 1, 2 over 5, 8 −1, −2 over 5,−8 −1, 2 over 5, −8 −1, −2 over 5,8

Below are two parallel lines with a third line intersecting them. Help me on this Geometry transversal angle!!

Astro Co. sold 20,500 units of its only product and incurred a $67,750 loss (ignoring taxes) for the current year as shown here. During a planning session for y

How many sitting u.S. Presidents died by assassination while in office?

where was the primary source created

Which action is not a step in using paper folding to find the midpoint of a line segment? A. Draw a line from the segment to any point on the fold line. B. Draw

Eaton Electronics uses a periodic inventory system. On March 31, Eaton has two plasma TVs on hand at a cost of $1,500 each (serial numbers 11534892 and 11534894