Question

probability distribution below. what is the probability that a worker chosen at random works in
probability distribution
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
6 hours
7 hours
8 hours
9 hours
10 hours
x
0.62
0.78
0.84
0.96

Explanation:

Step1: Analyze the probability distribution

We need to find the probability that a worker works \( 7 \) hours or more.

Step2: Sum the probabilities

From the graph, \( P(7) = 0.12 \), \( P(8)=0.6 \), \( P(9) = 0.14 \), \( P(10)=0.08 \).

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Wait, perhaps there was a mis - reading of the graph. If we assume the values: if \( P(6) = 0.04\), then \( P(X\geq7)=1 - P(6)\)

$$ P(X\geq7)=1-0.04 = 0.96 $$

Answer:

0.96