Midterm exam scores are normally distributed with a mean of 75 and a standard deviation of 6. If the exam is given to 10,000 students, we would expect
According to the question , Midterm exam scores are normally distributed with a mean of 75 and a standard deviation of 6. If the exam is given to 10,000 students.
We define X be the random variable normally distributed with mean 75 and standard deviation 6 shows the marks of each student.
Therefore:
A: Almost all scores to fall between 70 and 83.
This statement is not true as only 7055 number of students fall to 70 and 83.
Explanation is follows:
B. Half the scores to fall between 64 and 88.
This statement also not true as more than half (9512) of the students get 64 and 88 marks .
Explanation as follows:
C. No one to have received a score of 87.
As the X variable is normally distrubuted with mean 75 and standard deviation 6 ...
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