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Margarita [4]
3 years ago
5

This question has two parts. Use the graph to answer Part A and Part B.

Mathematics
1 answer:
sasho [114]3 years ago
3 0

sdsdffddddssssssrrdsssd

Step-by-step explanation:

ddddredxxsedfgestjkjjj

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Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile
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Step-by-step explanation:

As per given description in the question, we have

Population standard deviation : \sigma=2.6\text{ miles per gallon}

Critical value for 98% confidence interval = z_{\alpha/2}=2.33

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Formula we use to find the sample size :

n=(\dfrac{z_{\alpha/2}\cdot \sigma}{E})^2

i.e. n=(\dfrac{(2.33)\cdot(2.6)}{1})^2

\Rightarrow\ n=36.699364\approx37

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Step-by-step explanation:

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