For each diagram, decide if y is an increase or a decrease of x. Then determine the percentage.
1 answer:
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Answer:
a. Domain - x= all real numbers
b. Domain - x= all real numbers except 0
c. Domain - x= all real numbers
d. Domain - x= All real numbers
Step-by-step explanation:
The domain of a function is all the possible x values. It is easy to solve for domain by graphing the function.
a graph - blue
b graph - red
c graph - green
d graph - purple
Answer:
And we can find this probability using excel or the normal standard tabe and we got:
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 temperatures 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 using excel or the normal standard tabe and we got: