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3 years ago

Which of the following random variables is geometric?

SAT

1 answer:

yawa3891 [41]3 years ago

7 0

Answer:

b. The number of digits in a randomly selected row until a 3 is found.

Explanation:

A random variable often used in statistics and probability, is a variable that has its possible values as numerical outcomes of a random experiment or phenomenon. It is usually denoted by a capital letter, such as X.

In statistics and probability, random variables are either continuous or discrete.

1. A continuous random variable is a variable that has its possible values as an infinite value, meaning it cannot be counted.

2. A discrete random variable is a variable that has its possible values as a finite value, meaning it can be counted.

Also, any random variable that meets certain conditions defined in a research study.

Hence, an example of a geometric random variables is the number of digits in a randomly selected row until a 3 is found.

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In a newspaper, it was reported that the number of yearly robberies in Springfield in 2012 was 200, and then went down by 14% in

slamgirl [31]

Answer:

172

Explanation:

you multiply the 200 times the 14% in a format suvh as this, 200x.14 because 14% is out of 100% and you can see the 100% as 1.00, then the answer is 28 and subtract 28 from 200 ant that equals 172.

6 0

3 years ago

What is the area of the rectangle shown on the coordinate plane? enter your answer in the box. Do not round at any steps. Units²

nadya68 [22]

The area of this rectangle is 42 units.

<h3>What is the area of a polygon?</h3>

The area of a polygon refers to the total surface a polygon covers. This can include the total surface of a triangle, rectangle, octagon, etc.

<h3>How to calculate the area?</h3>

There are specific formulas to calculate the area of different polygons. In the case of rectangles the general formula is:

A = length x width

Moreover, because there are diagonal lines, you need to use this formula to calculate the distance of the length and width.

√[(x2-x1)²+(y2-y1)²

Length:

(5,2) (12 ,-5) coordinates in the plane for the upper length

√(5-12)²+(2- (-5)²
√(-7)²+(7)²
√49 + 49
9.89

Width:

(2, -1) (5, 2) coordinates in the plane

√(2-5)²+(-1- 2)²
√(-3)²+(3)²
√9 + 9
√18
4.24

4.24 x 9.89 = 41.9, which can be rounded as 42 units.

Note: This question is incomplete; below I attach the missing section.

Learn more about polygon in: brainly.com/question/2511126

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How do water, wind, and thermal energy from the sun move about Earth’s surface?

liraira [26]

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3 years ago

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Eddi Din [679]

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Explanation: got it right on my quiz and on edge 2021

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monitta

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