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7 months ago

15

She pays a total of $59.53. She pays a total of $6.49 for the ice cream. She buys 8 bags of oranges that each cost the same amou

nt.

1 answer:

Alona [7]7 months ago

3 0

Answer:

price of oranges is 6.63

Step-by-step explanation:

1)59.53-6.49=53.04

2) 53.04/8=6.63

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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 :-

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

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

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2 years ago

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Likurg_2 [28]

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2 years ago

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Agent Bourne transferred classified files from the CIA mainframe into his flash drive. The drive had 36.5, point, 5 megabytes on

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2 years ago

their was only 1/2 pizza 3 needed 2 share it ... how much of the original pizza woud each person get please help right away!!!!!

denpristay [2]

We are going to have to divide...
We have to put 1 as a denominator for 3 because it's a whole.
$\frac{1}{2} / \frac{3}{1}$
Cross multiply.
$1*1=1$
$3*2=6$
$= \frac{1}{6}$
Each person would get $\frac{1}{6}$ of the original pizza.

Have a nice day! :)

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2 years ago

What is the slope of the line 4x – 2y = 10? Explain your process (show your steps) for determining the slope.

Leni [432]

Solve for y.
subtract 4x from both sides
-2y = -4x + 10
divide everything by -2
y = 2x - 5
slope intercept form is y = mx + b, with m being the slope, so 2 is your slope

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2 years ago