Find the area of the circle. Leave your answer in terms of π. radius is 14 in.
1 answer:
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Answer:
5.48% of the people in line waited for more than 28 minutes
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation
, the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean waiting time of 20 minutes with a standard deviation of 5 minutes.
This means that
What percentage of the people in line waited for more than 28 minutes?
The proportion is 1 subtracted by the p-value of Z when X = 28. So
has a p-value of 0.9452.
1 - 0.9452 = 0.0548.
As a percentage:
0.0548*100% = 5.48%
5.48% of the people in line waited for more than 28 minutes
Answer:
B: a = 1, b= 7, c = -2
Step-by-step explanation:
<u>Quadratic Formula</u>
Given:
Comparing the terms of the given x-value with those of the quadratic formula:
Therefore:
Using the found values of a and b to solve for c:
In summary: a = 1, b = 7, c = -2
Therefore, <u>option B</u> is the correct solution.