A Student Asked a Statistics Professor If Grades Were Marked

question 54

Multiple Choice

A student asked a statistics professor if grades were marked "on the curve." The professor decided
To give the student a project to determine if last year's statistics grades were normally distributed.
The professor told the student that last year's mean mark was 70 with a standard deviation of 10
And to use the following results.
What is the expected number of C's?

• A) 39.25
• B) 34.13
• C) 13.59
• D) 30.00
• E) 15.87

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