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3 years ago

Form the intersection for the following sets.

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

4 0

Answer:

{20}

Step-by-step explanation:

Given sets

R = {10, 15, 20}
S = {20, 25}

Intersection of sets

R ∩ S = {20}

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Answer:

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Step-by-step explanation:

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4 years ago

If f(x) = -5, then f(-3)=

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determ

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Answer:

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

Step-by-step explanation:

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$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

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68% confidence level

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The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 + 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.24$

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