Answer:
Step-by-step explanation:
What's a pair of numbers that are addends of -6 but factors of 5? That would would be -5 & -1. Now we can break it up into groups. That will give us (x^2 - 5x)(x - 1). Now do the same for the second one. That will give us (x^2 - 8x)(x - 1x).
They are both in the thousands category
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:
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Step-by-step explanation:
How Many hurdles did Eli jump over?