Answer:
<h2>A. 30</h2>
Step-by-step explanation:
The answer is 567:
I got the answer by doing nothing then I did nothing and finally I did nothing hope you find this helpful as I just wasted your time
Answer:
Step-by-step explanation:
To add or subtract square roots, you must be taking the square roots of the same number. We need to change square root of 8 into a number times square root of 2.
Now that we have two square roots of 2, we add them like we add like terms.
Answer:
Where and
Then we have:
With the following parameters:
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 number of cars running a red light of a population, and for this case we know the distribution for X is given by:
Where and
Since the distribution for X is normal then we know that the distribution for the sample mean is given by:
With the following parameters:
Answer:
a
Step-by-step explanation: