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3 years ago

8) On Monday, three hundred sixty-one students went on a trip to the zoo. All eight

Mathematics

2 answers:

Lana71 [14]3 years ago

5 0

Answer:

44 students were in each bus

Step-by-step explanation:

Idk

scoundrel [369]3 years ago

3 0

Answer: 44

Step-by-step explanation:

1) First, subtract the number of students going in cars from the total number of students: 361 - 9 = 352

2) Then, divide the number of students going in buses by the number of buses: 352 / 8 = 44

And there is your answer. 44 students per bus.

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A random sample of 8 recent college graduates found that starting salaries for architects in New York City had a mean of $42,653

ycow [4]

Answer:

C. (36337.32, 48968.68)

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{9114}{\sqrt{8}} = 6315.68$

The lower end of the interval is the sample mean subtracted by M. So it is 42653 - 6315.68 = 36337.32.

The upper end of the interval is the sample mean added to M. So it is 42653 + 6315.68 = 48968.68.

So the correct answer is:

C. (36337.32, 48968.68)

3 0

3 years ago

Point R divides in the ratio 1 : 3. If the x-coordinate of R is -1 and the x-coordinate of P is -3, what is the x-coordinate of

grandymaker [24]

D -9 because it has a -3 and its going to be the same - sign

7 0

3 years ago

Read 2 more answers

Can someone help me? I don’t know how to solve it. Thank you!

Minchanka [31]

Answer:

C. 5x^2 - 8x + 13

Step-by-step explanation:

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3 years ago

Nate mother drives 225 miles to work each month how many miles do she drives in one year show work

Lubov Fominskaja [6]

Answer:

2700

Step-by-step explanation:

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3 years ago

Y^2+11y+18=0<br><br> solve using quadratic formula<br><br> help!!

AlexFokin [52]

Answer:

y = -2, -9

Step-by-step explanation:

Hope this helps!

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3 years ago