.If two events are not mutually exclusive then P(A or B)=P(A)+(P)B 72% of all observed fa;ll within 1 standard diviation of the mean if the data is normally distributed Probability trees are used to compute conditional probability Using the minimax regret we first construct a table of regrets for each [possible decision we look across the state of nature and make note of the maximum regret possible for that decision. We then pick the decision with the largest maximum regret. The Chi square test is a statistical test to see if an observer data fits a ???

2.The equal likelyhood criterion assigns aprobability of 0.5 to each state of nature, regardless of how many states of nature there are ? true or false

3.using the manimax regret criterion, we first construct a table of regrets. subsquently for each possible decision, we look across the states of nature and make a note of the maximinum regret possibility for that decision. we then pick the decision with the largest maximum regret? true or false

4. bassume it take a college student an average of 5 minutes to find a parking spot in the main parking lot , assume also that this time is normanly distributed with a standard of 2 minutes . find the probability that a randomly selected college student will take 2 to 6 minutes to find a parking spot in the parking lot

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