What is the total cost of an item that cost $43 when you add the sales tax (.0825)?

Mathematics

1 answer:

LuckyWell [14K]2 years ago

7 0

Answer:

43.0825

Step-by-step explanation:

I don't know if the tax is percentage or just adding

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The average homicide rate for the cities and towns in a state is 10 per 100,000 population with a standard deviation of 2. If th

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$P(X>8)=P(\frac{X-\mu}{\sigma}>\frac{8-\mu}{\sigma})=P(Z>\frac{8-10}{2})=P(Z>-1)$

And we can find this probability with the complement rule:

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Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the average homicide rate for the cities of a population, and for this case we know the distribution for X is given by:

$X \sim N(10,2)$