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dolphi86 [110]
3 years ago
9

Do students that are "Greek" (those who belong to a sorority/fraternity) have a tendency to be more involved in student governme

nt events than students who are "Not Greek"? Specifically, do more "Greek" students than "Not Greek" vote in the student elections? Let "Greek" students be group A and "Not-Greek" students be group B. Out of 250 randomly selected "Greek" students, 200 voted in the last election. Out of 500 randomly selected "Not Greek" students, 140 randomly selected "Not Greek" students voted in the last election. How would we write the alternative hypothesis?
Mathematics
1 answer:
defon3 years ago
7 0

Answer:

Step-by-step explanation:

Greek students will represent p1 (proportion 1)

Non-Greek students will represent p2

If we were to conduct a hypothesis test for this data, we would use a test for the difference of 2 proportions.  The hypothesis for this test would be as follows...

H0:  p1 - p2 = 0

Ha:  p1 - p2 > 0

The reason the alternate hypothesis is greater than 0 is because the question claims that the proportion of greek students (p1) is greater than the proportion of non-greek students (p2).  So p2 is smaller than p1.  We are subtracting a smaller number from a larger number.  That will always result in a positive number.

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san4es73 [151]

Answer:

The least common denominator is (b-8)(b+8)(b-1)

Step-by-step explanation:

We are given expression as

\frac{b}{b^2-64}-\frac{7b}{b^2+7b-8}

Firstly, we will factor both denominators

b^2-64=b^2-8^2=(b-8)(b+8)

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so, we can plug it back

\frac{b}{(b-8)(b+8)}-\frac{7b}{(b+8)(b-1)}

First term denominator is

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Second term denominator is

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So,

Least common denominator will be

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So, we get

LCD=(x-8)(x+8)(x-1)


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2 years ago
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Step-by-step explanation:

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3 years ago
Solve for x.
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Hi!

When we write a number in scientific notation, we write it like this:
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x = negative if the decimal is moved to the right. positive if moved to the left.

Okay, so we need to move the decimal in the number <span>0.0059 to the right to make it between one and 10.
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