Answer:
And we can find this probability with thie difference:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability with thie difference:
And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.
Answer:
<h2>15</h2>
Step-by-step explanation:
The formula of a slope <em>m </em>:
From the graph we have the points (0.2, 3) and (0.4, 6).
Substitute:
Answer:
Ava has to work 43 and a half (43.5) hours to earn $609.
Step-by-step explanation:
Given,
Price of new computer = $1218
Solution,
Ava already saved half amount of price of computer.
Half price =
The amount of money that Eva has to earn is the difference of price of computer and saved money.
Amount to be earn =
Here we use the unitary method to find out the number of hours.
∵ Ava earns $14 in 1 hour.
∴ Ava earns $1 =
∴ Ava earns $609 =
Hence Ava has to work 43 and a half (43.5) hours to earn $609.
What Are You Trying To Find? The Height? The Length, Or The Width? But I’ll At Tell You This, 12x10 Gives You 120, After Getting 120, You’re Trying To Find What Will Give You 960? 120x8 = 960 Cubic Inches.