Determine the situation that best describes a normal distribution.

Mathematics

2 answers:

Margaret [11]3 years ago

8 0

we know that

normal distributions:

a function that represents the distribution of many random variables as a symmetrical bell-shaped graph

It is a very common continuous probability distribution

we know that

heights of students in any class is continuous

because it can be any real numbers

so, option-A..........Answer

elixir [45]3 years ago

3 0

Answer:

a.heights of students in a class

Step-by-step explanation:

A normal distribution has following properties:

Normal distributions are symmetric and it has a bell shape graph and and the mean, median, and mode are all equal.

The shirt prices in a sale can be of the same price. The student grades can also be almost same in an easy test and the cost of similar kind of houses will have similar rates.

So, only height of students in a class are not same and they are continuous in nature.

So. the answer is option a.heights of students in a class,

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Viktor [21]

Answer:

x=70, y=55

Step-by-step explanation:

Since the angle "y" and 2x-15 form a straight line, that means the sum of the angles, must be 180 degrees.

So using this we can derive the equation: $y+2x-15=180$

The next thing you need to know is that the sum of interior angles of a triangle is 180 degrees, so if we add all the angles, we should get 180.

So using these we can derive the equation: $x+2y=180$

So, in this case we simply have a systems of equations. We can solve this by solving for x in the second equation (sum of interior angles), and plug that into the first equation.

Original Equation:

$x+2y = 180$