At a highschool, 90% of the students take Physics and 35% of the students take both Physics and Statistics. What is the probability that a student that is taking Physics is also taking Statistics?

38.89% probability that a student that is taking Physics is also taking Statistics

Step-by-step explanation:

We use the conditional probability formula to solve this question.

Suppose we have two events.

Event A and Event B.

The formula:

In which

P(B|A) is the probability of B happening, given that A has happened.

is the probability of these two events happening.

P(A) is the probability of A happening.

In this problem, we have that:

Event A: taking physics

Event B: taking statistics.

90% of the students take Physics

This means that

35% of the students take both Physics and Statistics.

This means that

What is the probability that a student that is taking Physics is also taking Statistics?

38.89% probability that a student that is taking Physics is also taking Statistics

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

5.25 ounces

step-by-step explanation:

divided 3/4 and 6