Identify the domain and range of each function.
2 answers:
Answer:
Domain : R
Range : R
Step-by-step explanation:
The given function is or it can be written as y = 15x.
So, the function is valid for all real values of x and we will get the real value of y for each real value od x.
Hence, all the real numbers or R is the domain of the function.
And all the real numbers or R is the range of the given function. (Answer)
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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: