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natima [27]
3 years ago
10

Suppose that Fred, a United States politician from a large western state, wants to create a new law that would require children

under the age of 16 to be accompanied by an adult at all times in public places. Based on previous voting records, Fred believes that he could gain the support of 25 % of likely voters. To test his hypothesis, Fred conducts a random survey of 1200 likely voters and asks if they would support his proposition. Let ???? denote the number of likely voters in Fred's sample that pledge their support, assuming that Fred's belief that 25% of likely voters would support his proposal. Which of the following statements are true about the sampling distribution of ???? ?O The sampling distribution of X is exactly normal with u = 0.5 and a = 0.0125. " The sampling distribution of X is exactly binomial with in = 1200 and p = 0.25. O The sampling distribution of X is exactly normal with u = 300 and a = 15. 0 The sampling distribution of X is approximately normal with a = 0.5 and o = 0.0125. 0 The sampling distribution of X is approximately normal with u = 300 and os = 15. O The sampling distribution of X is approximately binomial with n = 1200 and p = .. 25
Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0

Answer:

becaus it is a low

Step-by-step explanation:

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My name is Ann [436]

(1) The train travels 4 miles per gallon.

(2) The slope of the graph is m=\frac{1}{4}

Explanation:

(1) The miles that train travels per gallon is given by

Miles= \frac{800}{200}

Dividing, we have,

Miles= 4

Thus, the train travels 4 miles per gallon.

(2) To determine the slope, let us consider two points from the graph.

The coordinates are (0,0) and (800,200)

Thus, substituting the coordinates in the slope formula, we get,

m=\frac{200-0}{800-0}

Simplifying, we have,

m=\frac{200}{800} =\frac{1}{4}

Thus, the slope of the graph is m=\frac{1}{4}

3 0
3 years ago
The table below shows some values of f(x) and g(x) for different values of x: x f(x) = 9x + 7 g(x) = 5x −2 −11 −1 −2 0 1 1 5 2 C
harina [27]
The Correct Should Be 
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5 0
4 years ago
Read 2 more answers
Find a parabola with equation y = ax2 + bx + c that has slope 5 at x = 1, slope −11 at x = −1, and passes through the point (2,
azamat

By "slope" I assume you mean slope of the tangent line to the parabola.

For any given value of <em>x</em>, the slope of the tangent to the parabola is equal to the derivative of <em>y</em> :

y=ax^2+bx+c\implies y'=2ax+b

The slope at <em>x</em> = 1 is 5:

2a+b=5

The slope at <em>x</em> = -1 is -11:

-2a+b=-11

We can already solve for <em>a</em> and <em>b</em> :

\begin{cases}2a+b=5\\-2a+b=-11\end{cases}\implies 2b=-6\implies b=-3

2a-3=5\implies 2a=8\implies a=4

Finally, the parabola passes through the point (2, 18); that is, the quadratic takes on a value of 18 when <em>x</em> = 2:

4a+2b+c=18\implies2(2a+b)+c=10+c=18\implies c=8

So the parabola has equation

\boxed{y=4x^2-3x+8}

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3 years ago
Sean says that to add a number to -100 and still have -100 is to add zero.candice says that she can add two numbers to -100 and
elena-s [515]
Both are right b/c like sean says you can add zero and itll still be -100 but candice is also right b/c because you can add any # to that -100 but you can also add a negative # to get it back to -100. for example: -100+23= -77 but if you also add a negative 23 it would be right back to -100.
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4 years ago
How to find missing angles
mafiozo [28]
Step 1: Add together the known angles.
Step 2: Subtract the sum from 180°.
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