In a certain town 40 of the people work for the federal

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Reference no: EM13636291

In a certain town, 40% of the people work for the federal government. The table shows the probability distribution for the number of adults (among 4 randomly chosen) who work for the federal government. Note the last column shows the cumulative probabilities.

x	P(x)	Cumulative Probability
0	0.1296	0.1296
1	0.3456	0.4752
2	0.3456	0.8208
3	0.1536	0.9744
4	0.0256	1.0000

a. Find the probability that exactly 3 people work for the government.

b. Find the probability that less than 4 work for the government.

c. Find the probability that at least 2 work for the government.

d. Find the standard deviation for the probability distribution. (round to 2 decimal places)

e. Find the expected value for the number of people who work for the govt.

Reference no: EM13636291

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