A group of volunteers for a clinical trial consists of 81 women and 77 men. 18 of the women and 19 of the men have high blood pressure. If one of the volunteers is selected at random find the probability that the person has high blood pressure given that it is a woman.

0.22

Step-by-step explanation:

Let the events be:

A: the person is a woman

B: the person has high blood pressure

We want to find P(B/A), that is, the probability that a person has high blood pressure given that is a woman. We can use the following theorem:

P(B/A) = P(A∩B)/P(A)

P(A∩B) is the probability that a person is a woman and has high blood pressure. Given that there are 18 women with high blood pressure and 158 persons in total (81 + 77),

P(A∩B) = 18/158

P(A) is the probability that a person is a woman. Given there are 81 women and 158 persons in total,

P(A) = 81/158

P(B/A) = P(A∩B)/P(A)

P(B/A) = (18/158)/(81/158) = 0.22

im not sure

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt