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the table shows the probability distrubution of a random variable Z.Z- -17, -16,-15,-14,-13 P(Z)- 0.02 , 0.73, 0.02, 0.08, 0.15what is the mean of the probability distrubution

Sagot :

Mean of a probability distrubution​

In order to find the mean, we have to multiply each value with its probability and then add al the results:

Step 1- multiplying each value by its probability

Step 2 - adding all the results

Now, we add all the results we found on the previous step:

Mean = -0.34 - 11.68 - 0.30 - 1.12 - 1.95

Mean = -15.39

Answer: mean = -15.39

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