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Murrr4er [49]
3 years ago
15

Write the ratio in its simplest form. 1.4/7

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
8 0
1.4/7 in simplest form is 0.2/1 because you divide each side by 7.
Harlamova29_29 [7]3 years ago
3 0
1.4/7

Multiplying by 10

14/70 = 2/10 = 1/5

1/5 is the answer in its simplest form.
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What is the equation of the following line? Be sure to scroll down first to see all answer options.
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The Wisconsin Dairy Association is interested in estimating the mean weekly consumption of milk for adults over the age of 18 in
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Answer:

ME = 1.653 *\frac{7.9}{\sqrt{300}}= \pm 0.75

±0.75 ounce

Step-by-step explanation:

Assuming this complete question: The Wisconsin Dairy Association is interested in estimating the mean weekly consumption of milk for adults over the age of 18 in that state. To do this, they have selected a random sample of 300 people from the designated population. The following results were recorded: xbar=34.5 ounces, s=7.9 ounces Given this information, if the leaders wish to estimate the mean milk consumption with 90 percent confidence, what is the approximate margin of error in the estimate?

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X=34.5 represent the sample mean

\mu population mean (variable of interest)

s=7.9 represent the sample standard deviation

n=300 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=300-1=299

Since the Confidence is 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.05, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,199)".And we see that t_{\alpha/2}=1.653

And the margin of error is given by:

ME = 1.653 *\frac{7.9}{\sqrt{300}}= \pm 0.75

±0.75 ounce

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Answer:

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1 year ago
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Answer:

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Step-by-step explanation:

Let

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P(x < 110) = \int\limits^{110}_{90} {\frac{1}{30} } \, dx

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c.)

P(x > 100 ) = \int\limits^{120}_{100} {\frac{1}{30} } \, dx

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d.)

P(95 < x< 110)  = \int\limits^{110}_{95} {\frac{1}{30} } \, dx

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