Two people enter the elevator in a 5-floor building. let and denote the floors that they want to go to. assume that and are independent and equtl to 2, 3, 4 and 5 with probabilities 1/4 ) write down the joint pmf

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

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