Question

Can someone please help with this math question? Please? I'll fan and give a medal...

Answer 1

Based on the histogram, calculate P(red, purple).

Answer 2

Okay, you will need to translate your class' shorthand. P() means "probability of" but what does it mean to have two things inside the P() operator?

Answer 3

I have to find the experimental probability

Answer 4

how do I do that with two data? would I add red and purple together? 4+2=6? then divide 6 by 16(the total times spinned)

Answer 5

That is what I don't know. Hang on

Answer 6

P(red,purple) could mean
\[P(red U purple)\] or \[P(red THEN purple)\]

Answer 7

"U" means "or"

Answer 8

Let's do both if you don't know what the notation means.

Answer 9

Do you know how to read the histogram? Some outcomes happen more often than others. Looks like there are 7 green locations on the spinner, but only one orange one.

Answer 10

So first, how many red outcomes are there?
How many purple outcomes are there?

Answer 11

yes sir
there are 4 red and 2 purple

Answer 12

Yep yep, and how many total choices (all colors) are there?

Answer 13

16 total number of spins

Answer 14

To find P(red), we take (#red outcomes) / (total outcomes), or 4/16, or reduced to 1/4.

What is P(purple) ?

Answer 15

Once we have those two, we can do the rest. Which do you want to try first, P(red OR purple), or P(red AND purple)

Answer 16

2/16 = 1/8

Answer 17

So, if we want the probability of red then purple, we can call it P(red AND purple), and in this problem we can solve by multiplying the two probabilities.
P(red AND purple) = P(red) * P(purple)
I am guessing you know how to multiply the two fractions?

Answer 18

yes sir

Answer 19

OK, I will be offline for a bit. If it turned out you needed the _other_ answer, ping me and I'll check in later.