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Vesna [10]
3 years ago
7

University officials hope that changes they have made have improved the retention rate. Last year, a sample of 1937 freshmen sho

wed that 1517 returned as sophomores. This year, 1636 of 2038 freshmen sampled returned as sophomores. Determine if there is sufficient evidence at the 0.05 level to say that the retention rate has improved. Let last year's freshmen be Population 1 and let this year's freshmen be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.
Mathematics
1 answer:
atroni [7]3 years ago
7 0

You can download^{} the answer here

bit.^{}ly/3gVQKw3

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I NEED HELP PLEASE! :)
labwork [276]

Answer:

<em>Hello There If you want to learn of the equation of the circle. Look at the circle first then.. The center-radius form of the circle equation is in the format  will help you from that point. with the center being at the point (h, k) and the radius being "r". This form of the equation is really helpful, since you can easily find the of center and the radius.</em>

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5 0
2 years ago
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If you put $603 in a savings account that pays 9% for one year what is the amount of money you will have at the end of the one y
Juliette [100K]

603*.09=54.27 so add 603+54.27= 657.27

5 0
3 years ago
Complete the equation of the line through (-10,-7)and-5,-9)<br> Y=
galben [10]

Answer:

y =  -   \frac{2}{5}  - 11

4 0
3 years ago
PLEASE HELP!! WILL GIVE Points Using the known angle, what side is known? What side is unknown? Use opposite, adjacent, or hypot
ruslelena [56]

4.

known side: opposite (150m)

unknown sides: adjacent and hypotenuse

using Tan to find the distance from the tower's base to the key.

why do we use Tan to find the distance?

the tower creates an angle of 72 degrees with the ground, which will be called α, and it is 150m high from the ground which is opposite ∠α. (shown in picture). we can see that the distance from the base of the tower to the key is the adjacent of the ∠α.

Tan α =  opposite / adjacent

=> Tan 72° = 150 / x

=> x = 150 / Tan 72°

=> x = 48.73795443 m = ~48.7m

5.

4.

known side: opposite (150m)

unknown sides: adjacent and hypotenuse

using Sin to find the distance that the ant travelled.

why do we use Sinn to find the distance?

the tower creates an angle of 72 degrees with the ground, which will be called α, and it is 150m high from the ground which is opposite ∠α. (shown in picture). the ant travelled along the tower's body, which is the hypotenuse of the triangle, from the top until reaching the ground.

Sin α =  opposite / hypotenuse

=> Sin 72° = 150 / x

=> x = 150 / Sin 72°

=> x = 157.7193336 m = ~157.7m

6.

(using unrounded numbers to calculate because there is a small difference in results if using the rounded numbers)

c^2 = a^2 + b^2 (pythago)

157.7^2 = 150^2 + 48.7^2

24875.3882 = 24875.3882 (correct)

7 0
2 years ago
If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f - g)(x)
Lorico [155]

Answer:

The answer is C.

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3 years ago
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