SOLUTION: The mean age of students at a high school is 16.5 with a standard deviation of 0.7 you use the standard normal table to determine that the probability of selecting one student at r

Question 1190149: The mean age of students at a high school is 16.5 with a standard deviation of 0.7 you use the standard normal table to determine that the probability of selecting one student at random whose age is more than 17.5 years is about 8% what is the error in this problem?
Answer by ikleyn(52793)   (Show Source): You can put this solution on YOUR website!
.
The mean age of students at a high school is 16.5 with a standard deviation of 0.7
you use the standard normal table to determine that the probability of selecting
one student at random whose age is more than 17.5 years is about 8%
what is the error in this problem?
~~~~~~~~~~~~~~~~~~

I want to convince you that the statement in the post is non-sensical.

Let consider one academic year, let say from September to May, inclusive.

In the post, the mean age is considered as a real number continuous variable (since it uses decimals etc.)

But this "mean" (defined and used this way as a real decimal number) CHANGES during the academic year,
which is not reflected in the problem.

                Again: during the academic year, such a conception
        as a mean students age does not exist as a fixed real continuous decimal variable.

I do not know if I answered your question - - - it was not my goal.

My goal was to explain that the conception does not exist, which is discussed in the post.

RELATED QUESTIONS
The mean age of students at a high school is 16.5 with a standard deviation of 0.7. You... (answered by rothauserc)

The mean age of students at a high school is 16.5, with a standard deviation of 0.7. You... (answered by Boreal)

At a local high school, GPA's are normally distributed with a mean of 2.9 and standard... (answered by ewatrrr)

If you solve the question below, I'll be appreciated. The scores of students on the... (answered by Theo)

Students at Arrowhead High School took a Math test with a mean of 120 and a standard... (answered by Theo)

1. Convert x = 70 to z-score if Normal Distribution has mean = 50 and Standard Deviation (answered by ewatrrr)

A mandatory competency test for high school sophomore has a normal distribution with a... (answered by ewatrrr)

The diameter of an electric cable is normally distributed with a mean of 0.6 inch and a... (answered by ewatrrr)

There are 330 students at Valley Central High School enrolled in Chemistry. On the April... (answered by VFBundy)