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otez555 [7]
2 years ago
9

Tammy is making sweet tea for a family picnic. She wants to make enough tea to fill a pitcher that can hold 10 1/4 cups of tea.

She just poured 5 2/3 cups into the pitcher.How many more cups of tea does Tammy need to fill the pitcher?
Mathematics
2 answers:
Gnesinka [82]2 years ago
6 0
Tammy needs 4 7/12 or 55/12 more cups of tea.

kozerog [31]2 years ago
3 0

Answer:

hi

Step-by-step explanation:

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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}

\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 :-

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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)

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

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