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https://snag.gy/hlGP86.jpg

 

A spinner is divided into 4 sections. The spinner is spun 100 times.

The probability distribution shows the results.

What is P(1≤x≤3)?

 

Enter your answer, as a decimal, in the box.

 Apr 1, 2019
 #1
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Presumably the spinner is fair so that the probability of landing on 1-4 are all 1/4

 

In this case P[1<=x<=3] = P[1]+P[2]+P[3] = 3/4

 Apr 1, 2019

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