Garret studies number of hours sleep per night among students who have a grade point average of 3.0–4.0 versus students who have a grade point average of 2.0–3.0.

His theory is that students who get more sleep will have a higher grade point average than students who get less sleep because they are more rested and, therefore, better able to concentrate.

In his samples, the mean number of hours of sleep students with a grade point average of 3.0–4.0 received each night was 6.8. The mean number of hours of sleep students with a grade point average of 2.0–3.0 received each night was 6.4.

Assuming there are no outliers or skew, do the results support Garret's theory?

Select from the drop-down menus to correctly complete the statements.

Since the samples were large and randomly chosen, we can use the samples to understand the populations.

Because the sample mean for students with a grade point average of 3.0–4.0 is
Choose...
the sample mean for students with a grade point average of 2.0–3.0, the results
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support Garret's theory.

Answer:

Depends on your county

Answer:

60 feet cubed

Step-by-step explanation:

find the volume of the first pyramid then multiply by 2 since there are 2 of them.

Answer:

152. ..................

Answer:

c

Step-by-step explanation:

Answer:

i think its c

Step-by-step explanation:

it cant be D cause thats 90°

it cant be A cause the like 115° or 120°

and B looks like its a little to small

sorry if its wrong

Answer:

Step-by-step explanation:

Answer:

.

Step-by-step explanation:

.

Answer:

Step-by-step explanation:

The probability of picking an item A in a box of N items depends on nA, the amount of items A in the box at the time of picking, with the kinda instinctive value:

p = nA / N

then it means that if you have no green ball, the probability is 0/N = 0, if you only have green balls, it means you have a probability of N/N = 1 = 100%, and if you have as many green balls as non-green balls, you have a probability of nA/(2nA) = 0.5 = 50%.

Here the probability of first picking a green ball (nG=5) in a box of N=3+5+2+6=16 for the 1st pick is:

pG1 = 5/16

Now the trick here is that once you picked the green ball, you put it back in the box before picking another ball. So you still have N=16 balls for the second pick, and the probability of picking a yellow ball (nY=6) for the 2nd pick is:

pY2 = 6/16 = 3/8

(it would have been slightly higher, at 6/15, if you did NOT put back the green marble in the box).

Now you want BOTH events to be true. So you want G1 to be true AND Y2 to be true. The two events are independent (the probability of Y2 is 6/16 if you had G1 but is also 6/16 if you failed G1), so the probability of having both is simply done by multiplicating them:

pG1Y2 = pG1 * pG2 = 15/128

Answer:

Sara could try to lower her expenses. It is clear that she spends to much money and her income is low. I’m summary, Sara needs to stop spending so much money and probably get a better job that pays more to increase her income.

I really hope this helps, good luck! ;)

The difference between the mean and median is that the mean is the average number. f.e: 1, 2, 2, 2, 3, 3, 4, 5 - and if you add all those up, the mean would be 3, or 2.

But the median is the number in the middle Number.

What if you have 2 medians, though?

Well, that’s easy to solve IMO.

F.e: 22, 22, 23, 23, 23, 24, 24, 24, 25, 25

The median is either 23 or 24, right?

Okay. That’s simple. But what exactly do we do?

Let me show you:

So get the sum of 23 and 24, which is 47.

Now divide 47 by 2. And what do we get?

23.5.

Now round that, and you get 24. So 24 is the median!

Hope that helps!

Answer:

mean is the AVERAGE of all numbers

Step-by-step explanation:

because when  you  add up all the numbers then you divide it by the TOTAL NUMBER of NUMBERS!

and a median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average.

hope this helps

Answer:

228

Step-by-step explanation:

is it a rectangle prism?

if so, do This:

2(lb+hb+hl)

Length - 6

width = 4

height = 9

2(24+36+54)

2 ( 114)

= 228

I hope this helps!

Answer:

$268.38

Step-by-step explanation:

First we will take off the 20% off the 315 dollars. SO we can do this by saying that the discounted price is 80% of the original price, (because 100 - 20 = 80). So 0.8 * 315 = 252. So 252 = discounted price. So then we have to add the tax price.

Sales tax is %6.5, so we can do 252*0.065 to find the tax payed. We get 16.38, so we can dd this to our discounted price to get 252 + 16.38, or $268.38

Answer:

BxA=F

Step-by-step explanation:

Diagonal AC must be 20 feet so that ∠B will be 90°.

According to asked question, buck is creating a horse coral  by designing in such a way that corners will be at 90°.

So according to question we have to make ∠B as 90°.

So quadrilateral ABCD becomes a rectangular.

Therefore ΔABC  will be a right-angle triangle in which we can use Pythagoras theorem to measure the diagonal AC.

The Pythagoras Theorem says that in a right-angle triangle, the square of the hypotenuse is the sum of square of the other two sides of the right-angle triangle.

In the right-angle tringle ΔABC,

AC²=AB²+BC²

⇒ AC²=16²+12²

⇒ AC²=256+144=400

⇒AC=√400

⇒AC=20 feet

Therefore, Diagonal AC must be 20 feet so that ∠B will be 90°.

Learn more about Pythagoras Theorem

Here: https://brainly.com/question/343682

#SPJ2

Answer:

i think its 2400 square metres

Step-by-step explanation:

Answer:

3656.64 m^2 to nearest hundredth.

Step-by-step explanation:

Area = area of rectangle + area of a circle

The radius of the circle = 1/2 * 40 = 20.

Area = 40*60 + π*20^2

= 3656.64 m^2.

Answer:

red= circumfrence

black= diameter

green= radius

yellow= area

Step-by-step explanation:

Answer:

red goes with diameter

I am stuck on same thing as u

Step-by-step explanation:

Answer:

(0,-7)

(1,-9)

(-1,-5)

(-2,-3)

Step-by-step explanation:

Your slope would be 2/3

I think this is right. Let me know if you know the formula and i can explain it to you!

Answer:

18

Step-by-step explanation:

So what you need to find is the scale factor which is the scale of the difference between two lengths.

So Figure A is smaller than Figure B, as can be easily detected with our eyes.

Figure A has a ratio of 1/2, as 6/12 is equal to 1/2.

Since B is the original, where A is a scaled version, it must also have the same ratio of 1/2, so twice 9 is 18, which is your answer.

You can also use fractions, by making Figure A into 1/2 because 1/2 = 6/12.

Figure B can turn into 9/x.

Since you know they are scaled factors, they have the same ratio since one is scaled larger or smaller than from the original.

Since it must follow the multiplication of 2 for the side length, 9 x 2 gives your answer.

Answer:

..........???

Step-by-step explanation:

I'm confused...... sorry for taking your points

Answer:

A set of numbers used to locate a point on the coordinate plane. Also known as coordinates.

Step-by-step explanation:

Example of an ordered pair : (14,20)

The 14 is the x coordinate, which indicates the position on the horizontal line. (x - axis)

The 20 is the y coordinate, which indicates the position on the vertical line. (y - axis)

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Step-by-step explanation:

write what you know

square- all sides are equal

area of a square

A = L x W

where A = 81

L = sqrt(81)

W = sqrt(81)

perimeter the length around the square

P = sum of all sides

you can find hypotenuse using pythagorean thm

c=sqrt( L^2 + W^2)

Answer:

a.) -20p - 2

Step-by-step explanation: