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castortr0y [4]
3 years ago
7

Because the sample size is​ 9, do you need to be concerned about the shape of the population distribution when conducting the t

test in​ (a)? Explain. Choose the correct answer below. A. With a small sample​ size, it is difficult to evaluate the assumption of a skewed distribution.​ However, the distribution may be asymmetric because the mean and the median are not close in value. B. With a small sample​ size, it is difficult to evaluate the assumption that the distribution follows the​ Student's t distribution.​ However, the distribution may be symmetric because the mean and the median are close in value. C. With a small sample​ size, it is difficult to evaluate the assumption of normality.​ However, the distribution may be symmetric because the mean and the median are close in value.
Mathematics
1 answer:
Pavel [41]3 years ago
5 0

Answer:

The answer is "Option C".

Step-by-step explanation:

The sample size is 9, so it is difficult to evaluate the conformity assumption with just a little sample to come in the form of a population demographics whenever the t-test is carried out in a. The distribution can be symmetrical since the average or median are close in price, that's why choice C is correct.

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Which equations represent the line that is perpendicular to the line 5x − 2y = −6 and passes through the point (5, −4)? Select t
nignag [31]

For this case we have that by definition, the equation of a line in the slope-intersection form is given by:

y = mx + b

Where:

m: It's the slope

b: It is the cut-off point with the y axis

On the other hand we have that if two lines are perpendicular, then the product of their slopes is -1. So:

m_ {1} * m_ {2} = - 1

The given line is:

5x-2y = -6\\-2y = -6-5x\\2y = 5x + 6\\y = \frac {5} {2} x + \frac {6} {2}\\y = \frac {5} {2} x + 3

So we have:

m_ {1} = \frac {5} {2}

We find m_ {2}:m_ {2} = \frac {-1} {\frac {5} {2}}\\m = - \frac {2} {5}

So, a line perpendicular to the one given is of the form:

y = - \frac {2} {5} x + b

We substitute the given point to find "b":

-4 = - \frac {2} {5} (5) + b\\-4 = -2 + b\\-4 + 2 = b\\b = -2

Finally we have:

y = - \frac {2} {5} x-2

In point-slope form we have:

y - (- 4) = - \frac {2} {5} (x-5)\\y + 4 = - \frac {2} {5} (x-5)

ANswer:

y = - \frac {2} {5} x-2\\y + 4 = - \frac {2} {5} (x-5)

3 0
3 years ago
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fond two consecutive odd integers whose sum is 36 which of the following equations could be used to solve the problem
Travka [436]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

A). From the graph attached,

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B). RUN from point A to B (Horizontal distance) = 2 units

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    Slope of the line segment AB = \frac{\text{Rise}}{\text{Run}}

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