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Ksju [112]
3 years ago
15

A scientist was interested in studying if students political beliefs change as they go through college. Two hundred randomly sel

ected students were asked before they entered college if they would consider themselves liberal or conservative. Four years later, the same two hundred students were asked if they would consider themselves, liberal or conservative. The scientist decided to perform McNemar's test. The data is below. What is the null hypothesis? After College Before College Liberal Conservative Liberal 80 15 Conservative 20 85
A. -0.85 or 0.85

B. -0.39 or 0.39

C. -9.75 or -9.75

D. 1.96 or -1.96
Mathematics
1 answer:
swat323 years ago
7 0
You’re answer would be B love!
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Let f(x) = 2x – 3 and g(x) = 3x – 2. Find the value.
Sholpan [36]

Answer:

Ok:

Step-by-step explanation:

So f°g . means f(g(x)). (The ° should be more center and bigger but I don't know to do that on a keyboard). f(g(x)) means that you replace the x in f(x) with the g(x) function. i.e:

if f(x) = 2x+2

and g(x) = x^2

f(g(x)) = 2x^2+2.

Similarly, in this case, we get f(x) = 2x-3 and g(x) = 3x-2.

Then, f(g(x)) or f°g(x) is 2(3x-2) - 3.

And we plug in -2 to solve:

2(3(-2)-2)-3.

and get -19.

Check if I am wrong because everyone makes mistakes but that is the way to solve this.

7 0
3 years ago
Can someone help on both of the questions, i dont get it
o-na [289]

Answer:

A. finished 1km

Step-by-step explanation:

b. 8km per hour

6 0
3 years ago
27n⁵+75n³ (Factor completely)
dimaraw [331]

Answer:

3n^2 (9+25n)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Nasir and Seif began with an equal number of Skittles. Nasir ate 10 Skittles, and Seif ate 6. Now the ratio of Nasir's Skittles
Finger [1]
X=Amount of skittles at the start.
Nasir ate 10 skittles and Seif ate 6 skittles so the number of skittles they had(x) - how many they both ate equals : 2/3;

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3x-30=2x-12
x-30=-12
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They each started with 18 skilttles.
7 0
3 years ago
Help and please make sure it’s right there is only 6 questions :(
olya-2409 [2.1K]

Answer:

answer is -5

Step-by-step explanation:

6 0
3 years ago
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