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Nadya [2.5K]
3 years ago
8

Suppose that a survey was taken of 320 people and each person was asked if they approved or disapproved of the president's actio

ns during the government shutdown. One hundred eighty people said that they approved. Which of the following statements correctly describes how the confidence interval for the population proportion of people that approved the President's actions during the government shutdown?
A) There are not 15 successes and 15 failures. A confidence interval can be computed by adding 2 successes and 2 failures.
B) There are not 15 successes and 15 failures. A confidence interval can be computed by adding 4 successes and 5 failures.
C) There are not 15 successes and 15 failures. A confidence interval can not be done.
D) There are at least 15 successes and 15 failures. A large sample confidence interval for the population proportion can be computed (phat +/- z * sqrt(p*(1-p)/n) with no additional values added.
Mathematics
1 answer:
wolverine [178]3 years ago
6 0

Answer: I believe it’s C

Step-by-step explanation: I hope i’m right

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The table represents a linear function. What is the slope of the function?
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Answer: 3

Step-by-step explanation:

In theory we know that the equation of a linear function is expressed as

Eq.(1): y = m*x + c,

where m is the slope and c is a constant.

From the table we know the values of x and y, so we can use any of those, but in this case lets use the first and third rows of the table and substituting in Eq.(1) we obtain a 2-equation system as follow:

Point (-2,-2) gives:  -2 = (-2)*m + c   Eq.(2)

Point (0,4) gives:     4 = (0)*m + c   Eq.(3)

Now rearranging Eq.(2) we get: -2 = -2*m + c <=>  -2 - c = -2m Eq.(4)

Then rearranging Eq.(3) we get: 4 = 0 + c <=> c = 4

Plugging the value of c in Eq.(4) we get:

-2 = -2m + 4 <=> -2 - 4 = - 2m <=> -6 = -2m <=> m = 3

So finally and from Eq.(1) we obtain

y = 3x + c

6 0
3 years ago
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noname [10]

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Step-by-step explanation:

12/60 reduces to 1/5 if we divide numerator and denominator by 12.

Thus, 12/60 = 1/5.

If we now multiply both numerator and denominator by 3, we get 3/15, which is identical to 1/5.  

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\ the same direction the slash on the side is pointing right and down
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Step-by-step explanation:

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