Answer:
Commutative
Step-by-step explanation:
Given
Required
What law is applied
The applied law is commutative law of addition.
This law states that:
So:
When the positions of 2 and b are interchanged, we have:
Remove bracket
When two parallel lines are cut by a transversal then the interior angles on the same side of the transversal are
1 answer:
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The interval around the mean that contains 95% of the airfare is (250.2,524.2).
Normal Distribution is bell shaped and symmetrical in nature.
We use standard normal to find probabilities of normal distribution
Normal distributions have key characteristics that are easy to spot in graphs: The mean, median and mode are exactly the same. The distribution is symmetric about the mean—half the values fall below the mean and half above the mean. Diagram below shows standard normal figure.
In a normal distribution, 95% of the values fall between mean±2*sd
Give: mean=387.20
sd=68.50
So the interval around the mean that contains 95% of the airfare is (250.2,524.2).
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