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3 years ago

Marking brainliest!!!

Mathematics

2 answers:

Furkat [3]3 years ago

7 0

11 A
12 C
13 1
14 D
15 B
16 2
17 C
18 9

arlik [135]3 years ago

5 0

11 OPTION IS A

12 OPRION IS C

13 ANSWER IS 1

14 OPTION IS D

15 OPTION IS B

16 ANSWER IS 2

17 OPTION IS C

18 ANSWER IS 9

pls mark me as the brainliset hope it helps you

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Answer:

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Step-by-step explanation:

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The margin of error is:

$MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }$

Given:

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The critical value of <em>z</em> for 90% confidence level is:

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Compute the sample size required as follows:

$MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910$

Thus, the sample size required is 910.

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