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WITCHER [35]
3 years ago
15

Suppose a study estimated that 64% of the residents of a town (with an error range of +-12 percentage points at 95% confidence)

favor building a new community center. Which of the following percentages of the twonś residents may favor building a new community center?
A. 89%
B. 79%
C. 59%
D. 99%
Mathematics
1 answer:
Lostsunrise [7]3 years ago
7 0

Answer:

So the possible answer would be 59%

Step-by-step explanation:

A study estimated that 64% of the residents of a town (with an error range of +-12 percentage points at 95% confidence)  

In this question study gives a range 64 + or -12 it means they are not sure about answer but they estimated answer choice between 52 to 76

(64 - 12= 52 to 64 + 12 = 76).

I would figure out the lowest estimate and the highest estimate. and the answer would be between the two numbers.

In the choices there is only one number between 52 and 76. So the possible answer would be 59%.

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3 years ago
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Which point is not on the graph represented by y=x^2+2x-4
Illusion [34]
(-6,20) \\
x=-6 \\ y=20 \\ \Downarrow \\
20 \stackrel{?}{=} (-6)^2+2 \times (-6)-4 \\
20 \stackrel{?}{=} 36-12-4 \\
20 \stackrel{?}{=} 20 \\
20 = 20 \\
\hbox{the point is on the graph}

(-4,4) \\
x=-4 \\ y=4 \\ \Downarrow \\
4 \stackrel{?}{=} (-4)^2+2 \times (-4)-4 \\
4 \stackrel{?}{=} 16-8-4 \\
4 \stackrel{?}{=} 4 \\
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Both points are on the graph.
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3 years ago
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Georgia [21]
B or D choose one of them that what I think!!
8 0
3 years ago
N is a positive integer.Explain why n(n-1) must be an even number.
V125BC [204]

Answer:

n and (n - 1) are consecutive integers.

Step-by-step explanation:

We are given 'n', a positive integer.

This 'n' can either be odd or even.

Case I:

When 'n' is odd

The n - 1 is even.

Note that the product of odd and even is always even. That is the product of n and (n - 1) is even.

Case II:

when 'n' is even

Then n - 1 is odd.

Again, using the similar logic we can say that the product of n and n - 1 should be even because here, 'n - 1' is even and 'n' is odd.

4 0
3 years ago
A. Does the relationship of weeks passed and total number of followers represent a linear function? (0.5 points) B. What is the
vodomira [7]

The terms "linear function" in mathematics apply to two different but related ideas: A polynomial function of degree zero or one that has a straight line as its graph is referred to as a linear function in calculus and related fields.

a) Yes it does, because the graph of their relationship is a Straight line

b) Independent variables are variables whose variation does not depend on another. Number of works does not depend on followers. Therefore, it is independent

C)number of followers depend on the number of locks passing. It is dependent.

D) Slope = (Y₂- Y₁)/(x₂-x₁) = (100-82)/ (3-0) =  18/3 = 6

It represents the increase in number of followers per week,

E) y-intercept is value of y when x=0

y-intercept = 82. It means his initial number of followers

F) Slope-intercept form → y = mx + c m = slope горе C = y-intercept y = no of followers x= weeks.

Y=6x+82

Learn more about linear function here:

brainly.com/question/4025726

#SPJ10

7 0
2 years ago
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