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k0ka [10]
3 years ago
7

If you purchased a model A​ car, what is the probability that the new car will have zero​ problems?

Mathematics
2 answers:
Vikentia [17]3 years ago
6 0

A company publishes statistics concerning car quality. The initial quality score measures the number of problems per new car sold. For one​ year, Car A had 1.26 problems per car. Let the random variable X be equal to the number of problems with a newly purchased model A car. Complete​ (a) and​ (b) below.

a. If you purchased a model A​ car, what is the probability that the new car will have zero​ problems? The probability that the new model A car will have zero problems is :___ ​(Round to four decimal places as​ needed.)

b. If you purchased a model A​ car, what is the probability that the new car will have two or fewer​ problems? The probability that a new model A car will have two or fewer problems is :___ ​(Round to four decimal places as​ needed.)

Hope this helps you find your answer

marysya [2.9K]3 years ago
6 0
91% plz give me a brainiest
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The test statistic value is 1.474.

Step-by-step explanation:

In this case we need to determine whether the plant is making a higher than expected number of irregular t-shirts.

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The hypothesis for this test can be defined as follows:

<em>H₀</em>: The proportion of irregular t-shirts is 8%, i.e. <em>p</em> = 0.08.

<em>Hₐ</em>: The proportion of irregular t-shirts is more than 8%, i.e. <em>p</em> > 0.08.

The information provided is:

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\hat p=\frac{X}{n}=\frac{12}{100}=0.12

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t=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}

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Thus, the test statistic value is 1.474.

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Step-by-step explanation:

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