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.
you can reason this concretely.
suppose you start with 60 bugs.
1/5 of the 60 bugs is 12 bugs
divide 12 bugs into 3 equal groups. each group has 12/3 = 4 bugs.
the fraction now is 4/60
in lowest terms this is 1/15
The answer to the question is (x+14)•(x+14)
The value of c is 233.3
Step-by-step explanation:
Given equation is:
To find the value of c, we have to isolate c on one side of the equation
So,
Adding 250 on both sides
Multiplying by 20 on both sides
Dividing both sides by 18
Rounding off to the nearest one decimal place
c=233.3
The value of c is 233.3
Keywords: Linear Equation, Solution of linear equation
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