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igor_vitrenko [27]

3 years ago

13

Help pleaasssseeee (use picture) it’ll only take some time out of your day but will be a big impact on my day thank you hope you

have a wonderful day!!

1 answer:

trapecia [35]3 years ago

4 0

It would be 1120 because the formula I use is 2(b+h)h+2(b*h) which is 2(8+5)40+2(8*5)

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Evaluate a^2 b^2 c^2 for a = 2, b = 3, and c = 4.

nikdorinn [45]

Answer:

576

Step-by-step explanation:

(2^2)(3^2)(4^2)

4*9*16

4*9=36*16

36*16

576

3 0

3 years ago

A population of values has a normal distribution with μ = 247 and σ = 62.2. You intend to draw a random sample of size n = 16. (

nadya68 [22]

Answer:

a) $z = \frac{295.2-247}{62.2}=0.772$

And using the normal distribution table or excel we got:

$P(Z>0.772) = 1-P(Z$

b) $z = \frac{295.5 -247}{\frac{62.2}{\sqrt{16}}}= 3.119$

And we can use the normal standard table or excel in order to find the probability and we got:

$P(z>3.119) =1-P(Z$

Step-by-step explanation:

For this case we know that the random variable of interest is normally distributed with the following parameters:

$X \sim N (\mu = 247, \sigma =62.2)$

Part a

We want to find this probability:

$P(X>295.2)$

And we can use the z score formula given by:

$z = \frac{X-\mu}{\sigma}$

Replacing we got:

$z = \frac{295.2-247}{62.2}=0.772$

And using the normal distribution table or excel we got:

$P(Z>0.772) = 1-P(Z$

Part b

We select a random sample of size n = 16 and we try to find this probability:

$P(\bar X >295.2)$

And we can use the z score formula given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And replacing we got:

$z = \frac{295.5 -247}{\frac{62.2}{\sqrt{16}}}= 3.119$

And we can use the normal standard table or excel in order to find the probability and we got:

$P(z>3.119) =1-P(Z$

8 0

3 years ago

Please help!!! Circle theorems

il63 [147K]

Answer:

n+35=180

n=180-35

n=145

6 0

3 years ago

Graph the linear equation. Find three points that alive the equation, then plot on the graph. -5x - 3y= -7

xz_007 [3.2K]

Answer:

i need more info

Step-by-step explanation:i dont understand what suppose to do bro

6 0

3 years ago

In the newest animated movie,for every 9 kids,there are 4 adults.there are a total of 39 kids + adults.How many kids are there?

mylen [45]

There are 27 kids.

9*3 is 27, and 4*3 is 12. 27 + 12 = 39.

3 0

3 years ago