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Scorpion4ik [409]
3 years ago
5

Use a t-distribution to answer this question. Assume the samples are random samples from distributions that are reasonably norma

lly distributed, and that a t-statistic will be used for inference about the difference in sample means. State the degrees of freedom used.
Find the endpoints of the t-distribution with 2.5% beyond them in each tail if the samples have sizes n1=16 and n2=21.
Enter the exact answer for the degrees of freedom and round your answer for the endpoints to two decimal places.
Mathematics
1 answer:
ollegr [7]3 years ago
4 0

Answer:

Don't go on that link its a virus

Step-by-step explanation:

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Kate qualifies for a total of $9,450 in scholarships and grants per year, and she will earn $2,900 each year through a work-stud
gulaghasi [49]

Answer:

452

Step-by-step explanation:

6 0
2 years ago
The combined height of one for tree and one pine tree is 21 meters. The height of 4 for trees stacked on top of each other is 24
slamgirl [31]

Answer:

The height of the fir tree is <u>9 meters</u> tall and the pine tree is <u>12 meters</u>.

Step-by-step explanation:

Given:

Note :→ there is a mistake it is <u>fir tree</u> not for tree.

The combined height of one fir tree and one pine tree is 21 meters.

The height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.

Now, to find how tall are the types of trees.

Let the height of one fir tree bex.

And the height of one pine tree be y.

So, the combined height of one fir tree and one pine tree:

x+y=21.

y=21-x..........( 1 )

Now, as given the height of 4 for trees stacked on top of each other is 24 meters taller than one pine tree:

4x=y+24.

Putting the value of equation (1) in the place of y :

4x=21-x+24

<em>Adding both the sides x we get:</em>

5x=21+24.

5x=45.

<em>Dividing both the sides by 5 we get:</em>

x=9\ meters.

<em>So, the height of one fir tree = 9 meters.</em>

Now, putting the value of x in equation (1) we get:

y=21-9

y=12\ meters.

<em>Thus, the height of one pine tree = 12 meters.</em>

Therefore, the fir tree is 9 meters tall and the pine tree is 12 meters tall.

6 0
3 years ago
Which equation represents a line that passes through the two points in the
umka21 [38]

b is the right answer i think

4 0
3 years ago
Read 2 more answers
IM IN DESPERATE NEEED!!!<br> What is the solution to this system of equations?
natta225 [31]

Answer:

x + y - x = 6 - y  - 4 \\ y = 2 - y \\ 2y = y \\ y = 1 \\ x + y = 6 \\ x + 1 = 6 \\ x = 5

5 0
2 years ago
You can make one square with four toothpicks. Show how you can make two squares with 10 toothpicks and five squares with 12 toot
dsp73

Answer:

by doing it the same way you did with the first one.

Step-by-step explanation:

4 0
2 years ago
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