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elena-14-01-66 [18.8K]
3 years ago
12

Can someone answer this question quickly? thanks

Mathematics
1 answer:
kirill115 [55]3 years ago
5 0

Step-by-step explanation:

Let the sample space be S

S= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

\therefore n(S) = 10

Let A be the event of getting 6.

A = {6}

\therefore n(A) = 1\\P(A) = \frac{n(A)}{n(S)} = \frac{1}{10}

Let B be the event of getting a number greater than 3.

B = {4, 5, 6, 7, 8, 9, 10}

\therefore n(B) = 7\\P(B) = \frac{n(B)}{n(S)} = \frac{7}{10}

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1) z = -6.32

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Step-by-step explanation:

We are told that In a representative sample of 1000 adult Americans, only 400 could name at least one justice.

Thus:

Sample proportion; p^ = 400/1000 = 0.4

Sample size: n = 1000

We want to find if there is convincing evidence to support the claim that fewer than half of adult Americans can name at least one justice.

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Plugging in the relevant values;

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