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aev [14]
2 years ago
9

Chris drives 2.3 miles to school each day. The school is located 5.6 miles from a nearby shopping plaza. How far can Chris’ hous

e be from the shopping plaza? Explain your answer.
Mathematics
1 answer:
Simora [160]2 years ago
4 0

Answer:

7.9 miles.

Step-by-step explanation:

i just took 5.6 and added it to 2.3 because he drives 2.3 miles to school and the mall is 5.6 miles from the plaza so he would have to drive the extra 2.3 miles to get there.

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kirza4 [7]

Answer:

P(X

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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 scores of a population, and for this case we know the distribution for X is given by:

X \sim N(412,68)  

Where \mu=412 and \sigma=68

We are interested on this probability

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And the best way to solve this problem is using the normal standard distribution and the z score given by:

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If we apply this formula to our probability we got this:

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And we can find this probability using the normal standard table or excel and we got:

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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