Question

I NEED HELP ASAP PLEASE PLEASE PLEASE

Part A:

A bag has 1 red marble, 4 blue marbles, and 3 green marbles. Peter draws a marble randomly from the bag, replaces it and then draws another marble randomly. What is the probability of drawing 2 blue marbles in a

row? Show ALL your work AND write your answer as a fraction, decimal, and percent


Part B:

A chef draws cookies randomly from a box containing 6 cookies of the same shape and size. There is 1 chocolate cookie, 3 almond cookies, and 2 butter cookies. He draws 1 cookie and then draws another cookie without

replacing the first one. Find the probability of picking 1 almond cookie followed by another almond cookie. Show ALL your work AND write your answer as a fraction, decimal, and percent

Answer 1

For Part A:

The total of 1+4+3 marbles is 8 marbles

P( blue ) = blue /total = 4/8 = 1/2

He replaces it, so there are still 8 marbles in the bag

P(blue 2nd draw) = blue /total = 4/8 = 1/2

P(blue,replace, blue) = 1/2*1/2 = 1/4

For Part B:

1 choc chip, 3 almond, 2 butter. 6 total cookies.

probability of picking 1 almond on first pick : 3/6 which is 1/2

without replacement

probability of drawing another almond : 2/5

Probability of drawing 1 almond followed by another (without replacement ) is:

3/6 * 2/5 = 6/30 = 1/5

Explanation: