The route used by a certain motorist in commuting to work ca

The route used by a certain motorist in commuting to work causes him to encounter two traffic signals. The probability that he must stop at the first is .39, the probability that he must stop at the second signal is .43 and the probability that he must he stop at least one of the signals is .6523. Are the outcomes, as presented in this problem, statistically dependent or independent and why?

a) the outcomes are dependent, beacause traffic are interconnected to increase traffic flow

b) The outcomes are independent, because one light operates compleletly separate from the other

c) The otucomes are dependent. In order for them to be independent the probaility of stopping at exaclty 1 signal would be .6523

d) The outcomes are indenpendent, because the marginal probailities sum to 100%

Solution

c) The otucomes are dependent. In order for them to be independent the probaility of stopping at exaclty 1 signal would be .6523