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m_a_m_a [10]
3 years ago
12

Can someone help me with this please?

Mathematics
1 answer:
Ksivusya [100]3 years ago
4 0
The equation is y=3x-2
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Which of the following would be an appropriate alternative hypothesis?
Dennis_Churaev [7]

Answer:

a. The population proportion is less than 0.65

True, we ar interested in see if the population proportion is (less, higher, not equal) to a specified value.

Step-by-step explanation:

1) Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

2) Solution to the problem

a. The population proportion is less than 0.65

True, we ar interested in see if the population proportion is (less, higher, not equal) to a specified value.

b. The sample proportion is less than 0.65

FALSE, we are interesed on parameters, not in statistics like the sample proportion when we conduct a hypothesis test.

c. The population proportion is equal to 0.65

FALSE, the alternative hypothesis can never have an equal sign.

d. The sample proportion is equal to 0.65

FALSE, the alternative hypothesis can never have an equal sign. And we are interesed on parameters, not in statistics like the sample proportion when we conduct a hypothesis test.

e. both (a) and (d)

FALSE, a its correct but option d no.

5 0
3 years ago
What is the equation of the graph below?On a coordinate plane, a curve crosses the y-axis at (0, negative 1). It has a minimum o
zzz [600]

ANSWER:

4th option: y = cosine (x + pi)

STEP-BY-STEP EXPLANATION:

For the function y = cosine (x), when x = 0, y = 1 and when x = , y = -1. The graph shows the opposite, when x = 0, y = -1 and when x = , y = 1, so we must add the same amount x = , for y to be positive 1.

So the equation of the graph would be:

y=\cos(x+)

The correct answer is then the 4th option y = cosine (x + pi)

3 0
1 year ago
A tangent to the curve y=6x-x² cuts the x axis at point P. Find the coordinates of P. Help me calc the coordinates please​
Ilya [14]

We know that the line is tangent at the point (2,8)

The derivative of the function at x=2 is

f'(x) = 6-2x \implies f'(2) = 6-4=2

So, the tangent line passes through the point (2,8) and has slope 2. The equation is

y-8 = 2(x-2) \iff y = 2x+4

This line crosses the x axis where y=0:

0 = 2x+4 \iff 2x = -4 \iff x = -2

6 0
3 years ago
Find the sum of the polynomials. (3x3 + 4x2 - 2x + 1) + (x4 - x3 + 5x2 + 2x + 3) A. x4 + 2x3 + 9x2 - 4x + 4 B. x4 + 4x3 + 9x2 +
alisha [4.7K]
3 x^{3} + 4 x^{2} -2x + 1 + x^{4} -  x^{3} + 5 x^{2} + 2x +3 =  x^{4} +2 x^{3} + 9 x^{2} + 4

Hence, the answer is D.
7 0
3 years ago
If g (x) = 2x + 2, find g (a + h) - g (a).
Evgen [1.6K]

Answer: 2h

Explanation:

1) Given: g (x) = 2x + 2, find g (a + h) - g (a)

2) First, replace x by a + h:

g(a + h) = 2 (a + h) + 2 = 2a + 2h + 2

3) Second, replace x by a:

g(a) = 2a + 2

4) Subtract g(a+h) - g(a)

2a + 2h + 2 - (2a + 2) = 2a + 2h + 2 - 2a - 2 = 2h

Answer: 2a

Additional explanation:

This operation is the first step the function known as derivative, since derivative is defined as:

g'(x) = limit when h → 0 of [g( x + h) - g(h)] / h

Since, you have shown that the numerator is 2h, the limit is 2h/h = 2.

And now you know that the derivative of g(x) = 2x + 2 is 2.

3 0
3 years ago
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