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Lilit [14]
3 years ago
11

I need help asap please and thanks

Mathematics
1 answer:
KiRa [710]3 years ago
7 0

Answer:

It will be 29.39

Step-by-step explanation:

Hope this Helped

\sin ^{ - 1} ( \frac{4}{9}) = 26.39

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Using the simple random sample of weights of women from a data​ set, we obtain these sample​ statistics: nequals45 and x overbar
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Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : n=45

\overline{x}=148.79\text{ lb}

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a) We know that the best point estimate of the population mean is the sample mean.

Therefore, the best point estimate of the mean weight of all women = \mu=148.79\text{ lb}

b) The confidence interval for the population mean is given by :-

\mu\ \pm E, where E is the margin of error.

Formula for Margin of error :-

z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

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Critical value : z_{\alpha/2}=z_{0.05}=\pm1.645

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Now, the 90% confidence interval for the population mean will be :-

148.79\ \pm\ 7.69 =(148.79-7.69\ ,\ 148.79+7.69)=(141.1,\ 156.48)

Hence, the 90​% confidence interval estimate of the mean weight of all women= (141.1, 156.48)

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Jaclyn is selling cookies for her club. She sells 2 boxes for $5. What unit rate expresses the cost per box?
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Step-by-step explanation:

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