The difference between the means of the distributions is 15.
What is a normal distribution?
A normal distribution is a type of probability distribution that is symmetric about its mean. It shows that the frequency of the data near the mean is more than data that is far from the mean.
What is a mean?
Mean is a measure of the central tendency of a given finite set of numbers.
The mean of a normal distribution is the point where it reaches its peak.
Therefore, the mean of the blue graph is 30 and the mean of the red graph is 45.
By subtracting this:
Mean of the red normal distribution-Mean of the blue normal distribution
=45-30
=15
The difference between the means of the normal distributions is 15. The correct answer is option A.
Learn more about normal distributions here-https://brainly.com/question/12892023
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