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2 years ago

In a normal distribution what percent of values fall within one standard deviation of the mean?

2 answers:

8 0

Roughly 68% of the distribution is between z = -1 and z = +1, ie within 1 standard deviation of the mean. This is from the 68-95-99.7 rule or better known as the Empirical Rule.

The final answer is choice D) 68.2%

Ivenika [448]2 years ago

5 0

if a normal distribution, what percentage of the data falls within 2 standard deviation of the mean.... c. 95% apex..

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When the amount paid for land is 36,000 and the amount for expenses is 10,000 what is the balance in total transactions

I am Lyosha [343]

46,000 is the total transactions.

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2 years ago

Help please i dont know the answer

Law Incorporation [45]

Answer:

Step-by-step explanation:

Find the Rule :

2-1=1

3-1.5=1.5= constant

Verification :

1x1.5=1.5

2x1.5=3

9x1.5=13.5

48x1.5=72

What is the rule for input-output table?

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2 years ago

In the picture below, which segment is parallel to AD

Roman55 [17]

Answer:

Step-by-step explanation:

because they never intersect each other

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2 years ago

A board of length 7 divided by the quantity x minus 2 end of quantity meters was cut into two pieces. If one piece is 3 divided

bulgar [2K]

Answer:

Length of other board $=\frac{4x+20}{x^{2} -4}$ metres

Step-by-step explanation:

Given: Length of board = $\frac{7}{x-2}$ metres

Length of board was divided into two.

Length of one piece = $\frac{3}{x+2}$ metres

Let $l$ = length of the other board

Length of the other board = Length of board - Length of one piece

So, $l=\frac{7}{x-2}-\frac{3}{x+2}$

$l=\frac{7(x+2)-3(x-2)}{(x-2)(x+2)} \\\\l=\frac{7x+14-3x+6}{x^{2} -4} \\\\l=\frac{4x+20}{x^{2} -4}$

Thus, length of the other board $=\frac{4x+20}{x^{2} -4}$ metres

4 0

2 years ago

Find the size of angle YZX

Tasya [4]

Answer:

21.001 cm

Step-by-step explanation:

The diagram shows right triangle with

Hypotenuse ZY = 22.3 cm

Leg XY = 7.5 cm

By the Pythagorean theorem,

$XY^2+XZ^2=ZY^2\\ \\7.5^2+XZ^2=22.3^2\\ \\XZ^2=22.3^2-7.5^2\\ \\XZ^2=(22.3-7.5)(22.3+7.5)\\ \\XZ^2=14.8\cdot 29.8\\ \\XZ^2=441.04\\ \\XZ=\sqrt{441.04}\approx 21.001\ cm$

3 0

2 years ago