What must be true in order for P (A or B) - P (A) + P (B) ?

a. A and B cannot be disjoint.

b. A and B must be independent.

c. A and B cannot be independent.

d. A and B must be disjoint.

e. It is always true.

How are weather balloons and weather satellites similar? A - They both collect weather data from the atmosphere. B - They both deconstruct when they pass the stratosphere. C - They both observe weather conditions from the exosphere.

A sample of 90 chewable vitamin tablets have a sample mean of 277 milligrams of vitamin C. Nutritionists want to perform a hypothesis test to determine how strong the evidence is that the mean mass of vitamin C per tablet exceeds 279 milligrams.

Sean spends 49 minutes doing his homework or about 38% of the total time he will spend. About how long will he spend doing his homework?

Jack, Jill and Bill each carried a 48-ounce bucket full of water down the hill. By the time they reached the bottom, jacks bucket was only 3/4 full. Jill's was 2/3 full, and Bills was 5/6 full.

John gets paid $6 for each of the first 40 toy cars he makes in a week. For any additional cars beyond 40 his pay increases by 50%. How much is he paid if he makes 48 cars?

What is the solution of the proportion 14/12=d/48

Solve by factoring 2x^2+13x-7=0

Simplify 2 (-10 + 2)

3 years ago, the residents of Planet X found a black hole leading to another galaxy. Since then, they have been leaving Planet X at a rate of 120 residents per year.

I'm having some. Issues with this porblom