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caggh345
18.10.2020 •
Mathematics
The annual profit at a chain of stores is normally distributed with a mean of $61,000 and a standard
deviation of $23,000. The stores in the top 5% of annual profit were rewarded with a celebration. What
was the annual profit required to have a party?
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Ответ:
$98,835.
Step-by-step explanation:
Given: Annual profit at a chain of stores is normally distributed with a mean (
) of $61,000 and a standard deviation(
) of $23,000.
Let
denoted the profit.
Let
be the minimum profit required to have a party.
The stores in the top 5% (i.e. 0.05) of annual profit were rewarded with a celebration.
i.e.![P(xx_0)=0.05](/tpl/images/0818/5805/04bf8.png)
Hence, the annual profit required to have a party was $98,835.
Ответ:
1/4 × 60 = 15
3 quarters of an hour is
3 × 15 = 45 minutes