probability distribution below. what is the probability that a worker chosen at random works at least 8…

probability distribution below. what is the probability that a worker chosen at random works at least 8 hours?\nprobability distribution\n0.7\n0.6\n0.5\n0.4\n0.3\n0.2\n0.1\n0\n6 hours 7 hours 8 hours 9 hours 10 hours\nx\n0.62\n0.78\n0.84\n0.96

probability distribution below. what is the probability that a worker chosen at random works at least 8 hours?\nprobability distribution\n0.7\n0.6\n0.5\n0.4\n0.3\n0.2\n0.1\n0\n6 hours 7 hours 8 hours 9 hours 10 hours\nx\n0.62\n0.78\n0.84\n0.96

Answer

Explanation:

Step1: Identify relevant probabilities

The probability of working 8 hours is approximately 0.6, 9 hours is 0.1, and 10 hours is 0.1.

Step2: Calculate total probability

We sum the probabilities of working 8, 9, and 10 hours. So $P(X\geq8)=0.6 + 0.1+0.1$. $P(X\geq8)=0.8$

However, since we don't have 0.8 in the options and there might be some inaccuracy in visual - reading the bar - heights, if we assume a more accurate reading where the probability for 8 hours is 0.62, 9 hours is 0.12 and 10 hours is 0.1, then $P(X\geq8)=0.62 + 0.12+0.1=0.84$.

Answer:

0.84