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3 years ago

I need help with number 18 who can help

Mathematics

1 answer:

DiKsa [7]3 years ago

4 0

(86.8 - 3n)/4

You can get this by combining the two. Make sure to give common denominators.

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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)

5 0

3 years ago

X/4-5=-8 If anyone can answer id be very happy

svet-max [94.6K]

So first add 5 to both sides so you have x ÷ 4 = -3
Then multiply both sides by 4 to get x = -12
Hope this helps!

5 0

3 years ago

during a soccer game Aaron scored 1 out of 2 goals attempted.Lauren scored 6 out of 8 goals attempted. write the fraction that r

crimeas [40]

Arron score 1/2

Lauren scored 6/8 or 3/4

3/4 is larger than 1/2 so Lauren scored on more of her attempted goals than Arron did which makes her more successful.

5 0

3 years ago

What are the values of p and q?

Reptile [31]

Answer:

q = 94

p = 18

Step-by-step explanation:

The triangles are congruent so q = 94

Add q + 68 same as 94 + 68 = 162

Subtract 162 from 180 to get p

180 - 162 = 18

Hope this helps!

8 0

3 years ago

Need help ASAP will give brainlist

andreyandreev [35.5K]

I believe the answer would be your first choice!
I hope I am correct and that this helps

8 0

3 years ago

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