Experimental probability of the arrow of spinner (rotated 80 times) stopping over Section 1 is one fourth or 0.25.
Experimental Probability of an event is the ratio of number of favorable outcome to the total number of outcome of that event during the experiment.
Given information-
Total number of sections in a spinner is 3.
Total number of times the trials done is 80.
The three section table given in the problem has the values as,
The experimental probability of the arrow stopping over Section 1 has to be find out.
As the experimental probability of an event is the ratio of number of times it took place to the total trails. Thus the experimental probability of the arrow stopping over Section 1 is,
[tex]P=\dfrac{20}{80}\\P=\dfrac{1}{4}\\P=0.25[/tex]
Thus experimental probability of the arrow of spinner (rotated 80 times) stopping over Section 1 is one fourth or 0.25.
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