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1 year ago

What is the standard error of the sampling distribution of sample proportion?.

Mathematics

1 answer:

storchak [24]1 year ago

5 0

Answer:

√ (p(1-p) / n)

Step-by-step explanation:

Standard Error(SE) of the Sample Proportion: √ (p(1-p) / n). Note: as the sample size increases, the standard error decreases.

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Square root of 90 minus r equals r

dsp73

Answer:

r=sqrt45

Step-by-step explanation:

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3 years ago

Identify the equation of a line in slope-intercept form that is perpendicular to y = -1/3 x + 2 and passes through (2, 1)

Airida [17]

Answer:

Step-by-step explanation:

The slope of a line perpendicular to another line is the opposite reciprocal of the slope of the other line, meaning if the slope of the other line is $-\frac{1}{3}$ , then the slope of the line perpendicular is $3$ .

Knowing this, we can start to construct the equation for the line:

$y = mx + b$

$y = 3x + b$

To solve for $b$ , we plug in the coordinates of the point that we know the line runs through, $(2, 1)$ :

$y = 3x + b$

$1 = 3(2) + b$

$1 = 6 + b$

$b = -5$

Therefore, the slope of the line that is perpendicular ot the line provided in the equation is the following:

$y = 3x - 5$

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3 years ago

a right triangle has legs of lengths 6 and 2, what is the length of the hypotenuse to the nearest tenth

PolarNik [594]

Answer:

6.3

Step-by-step explanation:

$6^{2} + 2^{2} = x^{2}$

40 = $x^{2}$

$\sqrt{40} = \sqrt{x^{2} }$

x = 6.3

4 0

2 years ago

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15<br> 2 pts<br> Find the area of the given shape,<br> a) 18<br> b) 15<br> c) 24<br> d) 21

Nataly [62]

9514 1404 393

Answer:

A. 18

Step-by-step explanation:

The area of a trapezoid is given by the formula ...

A = 1/2(b1 +b2)h

Here, the parallel bases have lengths 3 and 9. The height is 3, so the area is ...

A = 1/2(3 +9)(3) = 18

The area of the trapezoid is 18 square units.

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2 years ago

Allisa [31]

Answer:

Step 1

Step-by-step explanation:

Carly divided 7a by a when she should have divided 7a by 7

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2 years ago

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