2 years ago

ashley recieved a 40% discount on the purchase of a 250$ tv. what was the amount of the discount that ashley recievd

Mathematics

1 answer:

sukhopar [10]2 years ago

7 0

She received a $100 discount

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Answer:

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Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$ .

In this problem

We are working with a sample of 81 adults, so the point estimae of the mean is the mean number of weekly hours that U.S. adults use computers at home.

So, the point estimate for $\mu$ is 8.5 hours.

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Answer:

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Step-by-step explanation:

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