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Find the Missing Probability

In the following probability distribution, a sociologist surveyed the households in a small town. The random variable x represents number of dependent children in the household.

x 0 1 2 3 4
P(x) 0.08 0.19 0.37 ? 0.17

Determine the missing probability in this distribution.
Round to the nearest hundredth.


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Hello and thank you for posting your question to Brainmass.

Here we need to find P(3) - what is the probability that a household has 3 dependents.

In discrete probability distribution, the sum of ...

Solution Summary

132 words of explanation and calculation showing how to determine the missing probability in a given distribution.