SOLUTION: The following probability distribution represents the probability of a randomly selected person exercising for x number of days per week. Calculate the probability a person does n

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Question 830749: The following probability distribution represents the probability of a randomly selected person exercising for x number of days per week. Calculate the probability a person does not exercise at all.
Number of days
Probability

0
10%

1
13%

2
27%

3
13%

4
12%

5
11%

6
7%

7
7%


What is the probability that a randomly selected individual exercised at least three times?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The following probability distribution represents the probability of a randomly selected person exercising for x number of days per week.
Calculate the probability a person does not exercise at all.
P(number = 0) = 0.1
--------------------------
Number of days
Probability
0
10%
1
13%
2
27%
3
13%
4
12%
5
11%
6
7%
7
7%

What is the probability that a randomly selected individual exercised at least three times?
P(3 <= x <=7) = 1-P(0<= x <=2)
= 1-[0.1 + 0.13 + 0.27]
= 1-0.41
= 0.59
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Cheers,
Stan H.
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