Mathematics, 14.07.2019 15:00 GemJock
Nina goes to the supermarket 0, 1, or 2 times in a week. the probability that she goes 0 days is 0.2, the probability that she goes 1 day is 0.50, and the probability that she goes 2 days is 0.30. what is the expected value of the number of days per week on which nina goes to the supermarket? 0.8
Answers: 1
are numbers of days and 
are probabilities.
.
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Nina goes to the supermarket 0, 1, or 2 times in a week. the probability that she goes 0 days is 0.2...
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