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3 years ago

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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If the typical balance on Lucy's credit card is $650 and the interest rate (APR) on her credit card is 18%, how much in interest

Mariana [72]

$9.75

<h3>Further explanation </h3>

Given:

The typical balance on Lucy's credit card is $650.
The interest rate (APR) on her credit card is 18%.

Question:

How much in interest would you expect Lucy to be charged in a typical month?

The Process:

This problem includes the type of determining simple interest.

$\boxed{ \ I = P \times r \times t \ }$

where,

I = simple interest
P = principal (initial amount)
r = annual interest rate
t = time (in years)

This time we will find out how much in interest we would expect to be charged in a typical month.

The data is as follows:

P = 650
r = 18% or $\frac{18}{100}$ or 0.18
t = $\frac{1}{12}$ year (one month)

Let us calculate how much in interest we would expect to be charged in a typical month.

$\boxed{ \ = 650 \times \frac{18}{100} \times \frac{1}{12} \ }$

$\boxed{ \ = 65 \times \frac{3}{10} \times \frac{1}{2} \ }$

$\boxed{ \ = \frac{195}{10} \times \frac{1}{2} \ }$

$\boxed{ \ = \frac{97.5}{10} \ }$

$\boxed{ \ = \frac{975}{100} \ }$

Thus the amount of interest we would expect Lucy to be charged in a typical month is $ 9.75.

_ _ _ _ _ _ _ _ _ _

Notes

We must be able to distinguish between simple and compound interest. Please learn about this in the link attached below.

<h3>Learn more </h3>

What interest (in dollars) does he receive annually? brainly.com/question/8192969
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