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3 years ago

How to write 1.07 as a percent

2 answers:

5 0

If i'm not mistaken, It is 107% because to change the decimal into a percentage is move the decimal point two spaces over to the right

Hoped this helped :)

Aleonysh [2.5K]3 years ago

4 0

You would move the decimal two places to the left and get your answer of 107%.

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You are studying the water properties of a bog in eastern Wisconsin and wish to estimate its acidity. You de ne a grid that cove

GenaCL600 [577]

Answer:

$4.8-1.453\frac{1.3}{\sqrt{82}}=4.591$

$4.8+1.453\frac{1.3}{\sqrt{82}}=5.009$

So on this case the 85% confidence interval would be given by (4.591;5.009)

And we can conclude that the true mean for the acidity at 85% of confidence is between (4.591;5.009)

Step-by-step explanation:

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".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n 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:

$df=n-1=82-1=81$

Since the Confidence is 0.85 or 85%, the value of $\alpha=0.15$ and $\alpha/2 =0.075$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.075,81)".And we see that $t_{\alpha/2}=1.453$

Now we have everything in order to replace into formula (1):

$4.8-1.453\frac{1.3}{\sqrt{82}}=4.591$

$4.8+1.453\frac{1.3}{\sqrt{82}}=5.009$

So on this case the 85% confidence interval would be given by (4.591;5.009)

And we can conclude that the true mean for the acidity at 85% of confidence is between (4.591;5.009)

6 0

4 years ago

Read 2 more answers

Please help i need to turn this in at 11:59 PM

vekshin1

Answer:

See explanation.

Step-by-step explanation:

To find the area of a parallogram, do A=Bh where a is the area, b is the base, and h is the height.

In this case, b is 9 cm while h is 6 cm. Do A=Bh by multiplying 9 cm by 6 cm. This will give us 54 cm².

The measurement we didn't use is the measure of the diagonal parts of the quadrilateral which, in this case, was 7.5 cm.

4 0

2 years ago

Read 2 more answers

Is it easier to graph an equation in y-intercept form or standard form? Explain.

Dafna1 [17]

Y-intercept form because it is more commonly used and easier to remember. The foundation of the y-intercept is easier to put in a graphing calculator also as it is already set to y=

3 0

3 years ago

A circle has its center at (0,0) and passes through the point (0,9). What is the standard equation of the circle?

vitfil [10]

Answer:

Step-by-step explanation:

I believe the answer is x² + y² = 9²

6 0

4 years ago

The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of mon

nirvana33 [79]

(420,104)(720,164)
slope = (164 - 104) / (720 - 420) = 60/300 = 1/5

y = mx + b
slope(m) = 1/5
(420,104)...x = 420 and y = 104
now we sub and find b, the y int
104 = 1/5(420) + b
104 = 84 + b
104 - 84 = b
20 = b

so ur equation is : y = 1/5x + 20

3 0

4 years ago