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Vera_Pavlovna [14]
2 years ago
7

How do you round 6.4 to the nearest whole number

Mathematics
1 answer:
rosijanka [135]2 years ago
3 0
You just simply round it to 6 since it can't go higher and you want a whole number.
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PLEASE HELP ME!
salantis [7]

Answer:

the last one

Step-by-step explanation:

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Determine if the statement below is always, sometimes, or never true. There are 250 degrees in the sum of the interior angles of
ZanzabumX [31]
It would never be true.
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What is the value of X
erica [24]

Answer:

x=3

Step-by-step explanation:

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What is the justification for each step in solving the inequality? 3x+1/2<−x+4 Select from the drop-down menus to correctly j
patriot [66]

Answer:

see below

Step-by-step explanation:

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3 years ago
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An unconfined compression test was performed to determine the average strength of concrete cylinders (in psi). It is believed th
Ronch [10]

Answer:

Explained below.

Step-by-step explanation:

(1)

The confidence level is, 91%.

Compute the value of α as follows:

\text{Confidence level}\% =(100-\alpha \%)\\\\91% = 100-\alpha \%\\\\\alpha \%=100-91\%\\\\\alpha \%=9\%\\\\\alpha =0.09

(2)

As the population standard deviation is provided, i.e. <em>σ</em> = 256 psi, the <em>z</em> value would be appropriate.

The <em>z</em> value for α = 0.09 is,

<em>z</em> = 1.69

(3)

Compute the 91% confidence interval as follows:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}

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(4)

The 91% confidence interval for population mean implies that there is a 0.91 probability that the true value of the mean is included in the interval, (2942.29, 3057.71) psi.

8 0
2 years ago
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