When probabilities are assigned based on historical counts of the occurrence of outcomes, the method used to assign the probabilities is called the -conditional method -subjective method -relative frequency method

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When probabilities are assigned based on historical counts of the occurrence of outcomes, the method used to assign the probabilities is called the -conditional method -subjective method -relative frequency method

Bob Neverready has a portable TV. The TV uses two batteries and both of them are dead. Bob opens a new pack of four good batteries and dumps them on the table. Then he opens the TV and dumps the two dead batteries on the table with the good ones. The batteries get mixed up and Bob no longer knows which are which. (Has this ever happened to you?) If Bob picks two batteries off of the table at random and puts them into the TV, what is the probability that he chose two good batteries and that the TV will work? You can round your answer to three decimal places.

The average unemployment rate in California in August 2020 was 11.4%. Assume that 550 employable people in California were selected randomly in August 2020. What is the expected value of the number of people in the sample who were unemployed? Round your answer to one decimal point

 

 

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