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Llana [10]
2 years ago
8

Cuanto es 1/3 mas 3/4 mas 1/2 lo necesito por favor ;_;​

Mathematics
1 answer:
timurjin [86]2 years ago
3 0

Answer:

19/12= 1 7/12

Step-by-step explanation:

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Given that a 90% confidence interval for the mean height of all adult males in Idaho measured in inches was [62.532, 76.478]. Us
grigory [225]

Answer:

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

For this case the confidence interval is given by (62.532, 76.478)[/tex]

And we can calculate the mean with this:

\bar X = \frac{62.532+76.478}{2}= 69.505

So then the mean for this case is 69.505

Step-by-step explanation:

Previous concepts

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".  

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".

\bar X represent the sample mean  

\mu population mean (variable of interest)  

\sigma represent the population standard deviation  

n represent the sample size  

Assuming the X follows a normal distribution  

X \sim N(\mu, \sigma)

The confidence interval on this case is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)

For this case the confidence interval is given by (62.532, 76.478)[/tex]

And we can calculate the mean with this:

\bar X = \frac{62.532+76.478}{2}= 69.505

So then the mean for this case is 69.505

5 0
3 years ago
5x+2y=21<br> – 2x+6y=-34
Arisa [49]

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:(97/17,−64/17)

Equation Form: x=97/17, y=−64/17

plz mark me as brainliest :)

5 0
3 years ago
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How much would a worker pay in taxes if his income is 750.00 and his tax bracket is 10%?
skelet666 [1.2K]

Answer:

75

Step-by-step explanation:

750×0.10=75

4 0
3 years ago
There are 5280 feet in one mile how many feet are there in 6 miles
STatiana [176]
31680 is the answer!!
7 0
3 years ago
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What’s the area of the sector
Stella [2.4K]

Answer:

Step-by-step explanation:

If the sector  wasn't there, the area would be that of a circle. The formula for a circle = pi * r^2

But the sector is there and so you have to account for it.

Area sector = (60/360) * pi * 11^2

Area sector = 1/6 * pi * 121

1/6 of 121 = 20.17

Area of sector = 20.17 pi square cm

5 0
2 years ago
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