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3 years ago

6 times itself, multiplied by 5 times itself

Mathematics

2 answers:

Pani-rosa [81]3 years ago

8 0

Answer:

900

Step-by-step explanation:

36 times 25 equals 900

Solnce55 [7]3 years ago

8 0

NB: anything times itself is squared.
example: a².

6² = 6 x 6

now for the question

6² x 5²
= 36 x 25
= 900

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

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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".

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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)

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

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