kimjooin02
21.02.2020 •
Mathematics
A store gives a customer 20% off if $10 or more amount of product is purchased. Otherwise the customer pays the usual price at checkout. The amount of product a customer purchases is modeled by a continuous random variable X with density
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Ответ:
The expected payment by the customer at the checkout is $9.
Step-by-step explanation:
The amount of the product is given as
Now the expected payment is given as
Here 0.8 x is used in the second integral because of the discount of 20% i.e. the expected price is 80% of the value such that
The expected payment by the customer at the checkout is $9.
Ответ: