h = 2
You must isolate the variable to solve using the order of operations, or PEMDAS.
Subtract 3 from both sides of the equation, and subtract 2h from both sides of the equation.
Divide both sides of the equation by 2.
Taryn collected data for the rain collected over a number of days in various cities. Which of the data sets represents a scatter
1 answer:
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Answer:
And if we solve for a we got
So the value of height that separates the bottom 20% of data from the top 80% is 23.432.
Step-by-step explanation:
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
For this part we want to find a value a, such that we satisfy this condition:
(a)
(b)
As we can see on the figure attached the z value that satisfy the condition with 0.20 of the area on the left and 0.80 of the area on the right it's z=-0.842
If we use condition (b) from previous we have this:
But we know which value of z satisfy the previous equation so then we can do this:
And if we solve for a we got
So the value of height that separates the bottom 20% of data from the top 80% is 23.432.