What is the expected value of the random variable with the given probability distribution? If necessary, round your answer to the nearest hundredth.   Value 1 2 3 4 5 6 Probability 0.07 0.07 0.07 0.07 0.65 0.07 a. 0.73 b. 5 c. 4.37 d. 3.50

A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day Probability 0 1 2 0.01 0.04 0.2 4 5 6 0.3 0.11 0.09 Find the expected number of complaints per day. The expected number of complaints per day is (Do not round your answer.) 3 0.25

Find the indicated probability. If necessary, round to three decimal places. Suppose that E and F are two events and that P(E and F) = 0.41 and P(E) = 0.5. What is P(FE)? O A. 0.82 B. 1.220 O C. 0.205 O D. 0.91 Click to select your answer. search 61

If the probability distribution for the random variable X is given in the table, what is the expected value of X? Xi - 5 1 5 Pi .3 .5 .2 LO

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Find the probability and interpret the results. If convenient, use technology to find the probability. The population mean annual salary for environmental compliance specialists is about $62,500. A random sample of 34 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than $59,000? Assume o = $5,800. The probability that the mean salary of the sample is less than $59,000 is. (Round to four decimal places as needed.) Interpret the results. Choose the correct answer below. O A. About 2% of samples of 34 specialists will have a mean salary less than $59,000. This is not an unusual event. O B. Only 0.02% of samples of 34 specialists will have a mean salary less than $59,000. This is an extremely unusual event. OC. Only 2% of samples of 34 specialists will have a mean salary less than $59,000. This is an extremely unusual event. O D. About 0.02% of samples of 34 specialists will have a mean salary less than $59,000. This is not an…

An urn contains 2 red and 2 green marbles. We pick a marble, record its color, and replace it. We repeat this procedure a second and a third time. The probability distribution for the number of red marbles is given below. Number of red marbles 0 1 2 3 Probability 1/8 3/8 3/8 1/8 For this distribution, the probability of 2 or more red marbles is given by:   a. 1/4.   b. 3/8.   c. 6/8.   d. 1/2.

A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day 0 1 2 Probability 3 4 5 6 0.02 0.06 0.17 0.25 0.3 0.11 0.09 Find the expected number of complaints per day. The expected number of complaints per day is (Do not round your answer.)