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QveST [7]
3 years ago
9

Suppose that the number of customers entering a department store in a day is a random variable with mean of 21 customers/day. Su

ppose that the amount of money spent by each one of these customers is a random variable is governed by the following probability: with probability 1/5 a customer spends $20, with probability 2/5 a customer spends $10, with probability 2/5 a customer spends $5. The amounts spent by different customers are statistically independent. Also assume that the amount spent by each customer is independent of the number of customers to enter the store. Calculate the average cumulative amount spent by all customers that visit the store in a day.
Mathematics
1 answer:
marshall27 [118]3 years ago
7 0

Answer:

280 dollars a day i.belive

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A group of friends wants to go to the amusement park. They have no more than $165
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Answer:

17.75x + 5.25 \leq 165

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Step-by-step explanation:

The total cost can be represented by 17.75x + 5.25, where x is the number of people.

They can only spend a maximum of $165, so a less than or equal sign has to be used.

The inequality will be 17.75x + 5.25 \leq 165

Now, solve for x:

17.75x + 5.25 \leq 165

17.75x \leq 159.75

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<u>Answer </u><u>:</u><u>-</u>

Given inequality ,

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<u>When</u><u> </u><u>x </u><u>is </u><u>-</u><u>5</u><u> </u><u>y</u><u> </u><u>is </u><u>5</u><u> </u>

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<u>When </u><u>x </u><u>is </u><u>3</u><u> </u><u>y </u><u>is </u><u>-</u><u>6</u><u> </u>

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<u>When </u><u>x </u><u>is </u><u>-</u><u>2</u><u> </u><u>y </u><u>is </u><u>-</u><u>5</u><u> </u>

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