ICAMARON5070

24.02.2020 • 

Mathematics

The number of customers in line at a supermarket express checkout counter is a random variable whose probability mass function is given in the following table.x 0 1 2 3 4 5p(x) 0.10 0.25 0.30 0.20 0.10 0.05For each.customer, the number of items to be purchased is a random variable with probability mass function.y 1 2 3 4 5 6p(y) 0.05 0.15 0.25 0.30 0.15 0.10Let X denote the number of customers in line, and let Y denote the total number of items purchased by all the customers in line. Assume the number of items purchased by one customer is independent of the number of items purchased by any other customer.a. Find P(X = 2 and Y = 2).b. Find P(X = 2 and Y = 6).c. Find P(Y = 2).

Ответ:

AyeSmoky

19.01.2022

Mathematics

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The answer & explanation for this question is given in the attachment below.

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Ответ:

bossboybaker

02.05.2020

Mathematics

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You would multiply by the numerator/denominator on both sides. This is because a fraction is basically division and the opposite of division is multiplication.

For example, say you had 2=x/4

To solve this equation, you would multiply by 4 on both sides.

So, x=8 (because you canceled the 4 out and 4x2=8).

I hope this helped!

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