3 years ago

HELP HELP HELP HELP ME PLEASE Answer 7 and 8

Mathematics

1 answer:

Svetach [21]3 years ago

8 0

I DONT KNOW FHUEITHNGIFJTFRJNRGV

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The seventh grade class at a Christian school had 24 students enrolled at the beginning of the school year. At the end of the sc

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3 years ago

uppose a large telephone manufacturer has a problem with excessive customer complaints and consequent returns of the phones for

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The answer is "294.2075".

Step-by-step explanation:

Given:

$\hat{p} = 0.5 \\\\1 - \hat{p} = 1 - 0.5 = 0.5\\\\E = 4\% = 0.04\\\\$

At $83\%$ confidence level the z is ,

$\alpha = 1 - 83\% = 1 - 0.83 = 0.17\\\\\frac{\alpha}{2} = \frac{0.17}{2} = 0.085\\\\Z_{\frac{\alpha}{2}} = Z_{0.085} = 1.3722\\\\n = (\frac{Z_{\frac{\alpha}{2}}}{E})^2 \times \hat{p} \times (1 - \hat{p})\\\\$

$= (\frac{1.3722}{0.04})^2 \times 0.5 \times 0.5\\\\= (34.305)^2 \times 0.5 \times 0.5\\\\= 1,176.83 \times 0.5 \times 0.5\\\\= 1,176.83 \times 0.25\\\\=294.2075$

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