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3 years ago

HELP ME NOW>>>>>>>>>>>>>>>>

Mathematics

1 answer:

Nutka1998 [239]3 years ago

4 0

Answer:

3.8

Step-by-step explanation:

1.8 + 3.6 = 5.4

5.4 - 9.2 = 3.8

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The average weight of the entire batch of the boxes of cereal filled today was 20.5 ounces. A random sample of four boxes was se

zhenek [66]

Answer:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s= 0.286$

And then the estimator for the standard error is given by:

$SE= \frac{0.286}{\sqrt{4}}= 0.143$

Step-by-step explanation:

For this case we have the following dataset given:

20.05, 20.56, 20.72, and 20.43

We can assume that the distribution for the sample mean is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And the standard error for this case would be:

$SE= \frac{\sigma}{\sqrt{n}}$

And we can estimate the deviation with the sample deviation:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s= 0.286$

And then the estimator for the standard error is given by:

$SE= \frac{0.286}{\sqrt{4}}= 0.143$

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3 years ago

Please help ASAP it's due in a minute

grigory [225]

Answer:

Step-by-step explanation:

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3 years ago

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A recent report indicated that 22 percent of the households in a certain community speak a

Irina-Kira [14]

Answer:

16.1157

Step-by-step explanation:

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2 years ago

Compare, in the box below, 0.5 and 0.5 when written as fractions. Make an observation about these repeating decimals when they a

lord [1]

5/10 & 5/10
The zero just repeats.

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3 years ago

Which expression is equivalent to sqrt128x^5y^6/2x^7y^5 ? Assume x 0 and y > 0.

kolbaska11 [484]

<u>Answer:</u>

$\frac{8\sqrt{y} }{x}$

<u>Step-by-step explanation:</u>

We are given the following expression and we are to simplify it:

$\sqrt {\frac {128x^5y^6} {2x^7y^5} }$

To make it easier to solve, we can also write this expression as:

$\sqrt {\frac{128}{2} * \frac {x^5} {x^7} * \frac {y^6} {y^5}}$

Now we will cancel out the like terms to get:

$\sqrt {64*\frac{1} {x^2}*y }$

Taking the square root of the terms to get:

$8*\frac {1}{x} .\sqrt{y}$

$\frac{8\sqrt{y} }{x}$

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3 years ago

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