3 years ago

Write an expression to represent the perimeter of a rectangle with one side is x=4 and

Mathematics

1 answer:

Ksju [112]3 years ago

5 0

Answer:

que njsnskdkd

Step-by-step explanation:

qylikqunwjsmsnsj

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Lady_Fox [76]

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D) 72 is correct because 8 times 9 is 72! Hope this helped. :)

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3 years ago

Find the surface area of the following shape

ryzh [129]

Answer:

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3 years ago

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andrezito [222]

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4 years ago

b. Find a 99% confidence interval for mean age of ICU patients using the facts that, in the sample, the mean is 57.55 years and

rjkz [21]

Answer:

99% of confidence intervals for mean age of ICU patients

(53.8920 , 61.2079)

Step-by-step explanation:

Explanation:-

Given sample mean $x^{-} = 57.55$

Given standard error is determined by

S.E = $\frac{S.D}{\sqrt{n} }$

Given data standard error = 1.42

99% of confidence intervals for mean is determined by

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.01} \frac{S.D}{\sqrt{n} } )$

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.05} = 2.576$

$(x^{-} - 2.576 S.E , x^{-} + 2.576 S.E)$

$(57.55 - 2.576X 1.42 , 57.55+ 2.576 X1.42)$

(53.8920 , 61.2079)

Conclusion:-

99% of confidence intervals for mean is determined by

(53.8920 , 61.2079)

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3 years ago

Five pages contain 6, 6, 9, 10 an 11 stickers. Can the stickers be rearranged so that there is an equal whole number of stickers

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