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2 years ago

10

There are a total of 71 students in the cafeteria.

1 answer:

Vsevolod [243]2 years ago

7 0

Answer:

49

Step-by-step explanation:

you can make the information into equations them solve simultaneously:

b + g = 71

b = 2g + 5

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2 years ago

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3 years ago

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3 years ago

Question 9 Of 1000 randomly selected cases of lung cancer, 841 resulted in death within 10 years. Construct a 95% two-sided conf

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Answer:

0.818335 ≤ p ≤ 0.86366

Step-by-step explanation:

Given that:

Sample size (n) = 1000

Positive lung cancer = 841

n(p) = 841, p(p) = 841/1000 = 0.841

n(1 - p) = 1000 - 841 = 159

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95% confidence interval

For a 95% confidence interval : z = 1.96

P ± z√p(1-p) / n

0.841 ± 1.96 * √0.841(0.159) / 1000

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3 years ago