Question

The table shows the result of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal

P(not red)

Color RED BLUE GREEN YELLOW
Times Spun 20 10 9 11


A. 0.6
B. 0.4*****
C. 0.2
D. 0.3

Answer 1

your answer is P(red)

the question is P(not red)

the two probabilities sum to 1
... something is either red or not

Answer 2

I'm Confused still?

Answer 3

Experimental probability is what we infer from an experiment.

For example: if we toss a fair coin 100 times, head comes out 44 times. We say that head came out 44 times out of 100 (in this trial), and the experimental probability of head,
P(head)=44/100=0.44.
We can also say that the experimental probability of "Not Head" is
P(not head)=56/100=0.56
because 100-44=56 tosses were not head.
Alternatively, we can also say
P(not head)=100/100-44/100=1-0.44=0.56