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3 years ago

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Couch Emanuel is trying to lose weight. he starts 2017 weighing 296 pounds. If he plans to burn enough calories to lose 3 pounds

per week, then how many weeks will pass before Coach Emanuel is at most 251 pounds
Will give brainlist for once in my life

1 answer:

Fantom [35]3 years ago

8 0

Answer:

15 weeks

Step-by-step explanation:

I just answered this one not too long ago

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there are 37 chairs and 9 tables in a class room Mrs Kensington wants to put an equal number of chairs at each table how many ch

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Answer:

4 chairs at each table and 1 leftover

Step-by-step explanation:

9 goes into 37 four times and there is a remainder of one (37-36 = 1).

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Estimate round to nearest ten thousand 649,891 - 35,427

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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

Tomtit [17]

Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : $n=45$

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

$\sigma=31.37\text{ lb}$

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 :-

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

Given : Significance level : $\alpha=1-0.90=0.1$

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

Margin of error : $E=1.645\times\dfrac{31.37}{\sqrt{45}}\approx 7.69$

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

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

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