You have a standard deck of 52 playing cards (13 of each suit). you draw a hand of the top 17 of them. spades are one of the four suits. what is the expected value of the number of spades you draw?

The expected value of the number of spades are = 4.25

Step-by-step explanation:

As per the question,

W know that in a standard deck of 52 playing card, there are 4 suits, and each suit have 13 playing card.

Since, we know that

Therefore,

Probability of any random card being a spade is

So the expected number of spades we draw are

Hence, the expected value of the number of spades are = 4.25

step-by-step explanation:

it's 15

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