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ioda
3 years ago
10

PLS help ASAP DUE IN 20 MINUTES I CANT FIGURE IT OUT

Mathematics
1 answer:
uysha [10]3 years ago
3 0

Answer:

x=8

Step-by-step explanation:

if you multiply 6 by 8 and subtracted by 3 it will equal 45

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Construct a​ 95% confidence interval for the population standard deviation sigma of a random sample of 15 crates which have a me
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Answer:

There is a 95% confidence that the sample has a mean between 158.92 pounds and 171.48 pounds

Step-by-step explanation:

Given that mean (μ) = 165.2 pounds, standard deviation (σ) = 12.4 pounds, sample size (n) = 15 crates. Confidence (C) = 95% = 0.95

α = 1 - C = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

The z score of α/2 corresponds to the z score of 0.475 (0.5 - 0.025) which is 1.96. z_{\frac{\alpha}{2} }=1.96

The margin of error (E) is given by:

E=z_{\frac{\alpha}{2} }\frac{\sigma}{\sqrt{n} } =1.96*\frac{12.4}{\sqrt{15} }= 6.28

The confidence interval = μ ± E = 165.2 ± 6.28 = (158.92, 171.48)

The confidence interval is between 158.92 pounds and 171.48 pounds. There is a 95% confidence that the sample has a mean between 158.92 pounds and 171.48 pounds

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2 years ago
Myra said the number 15 is a prime number because it has two odd facrors 3 and 5. do you agree or disagree with myra
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yes I agree because if u did ur time tables right 3&5 would of been ur odd facrors

 



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Step-by-step explanation:

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