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3 years ago

A test for marijuana usage was tried on 200200 subjects who did not use marijuana. the test result was wrong 77 times.

Mathematics

1 answer:

Alexxandr [17]3 years ago

5 0

400,246 ( 200,200-77=200,123 divide by .5= 400,246

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A growth-mindset researcher plans to take an SRS of 200 teenagers from the population of teenagers in North America to see what

Sonbull [250]

Answer:

The mean of the sampling distribution of p is 0.75 and the standard deviation is 0.0306.

Step-by-step explanation:

Central Limit Theorem:

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean $\mu = p$ and standard deviation $s = \sqrt{\frac{p(1-p)}{n}}$

75% of teenagers in North America are pursuing a goal they have set for themselves.

This means that $p = 0.75$

Sample of 200.

This means that $n = 200$ .

What are the mean and standard deviation of the sampling distribution of p?

By the Central Limit Theorem

Mean $\mu = p = 0.75$

Standard deviation $s = \sqrt{\frac{0.75*0.25}{200}} = 0.0306$

The mean of the sampling distribution of p is 0.75 and the standard deviation is 0.0306.

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krek1111 [17]

Answer:

Step-by-step explanation:

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Taya2010 [7]

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2 years ago

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Can you very be kind and answer

Lera25 [3.4K]

area of a circle is PI x r^2

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using 3.14 for PI

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so 22.89 x .5 = 11.45 cm^2

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3 years ago

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Step-by-step explanation:

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