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A Student Asked a Statistics Professor If Grades Were Marked

question 72

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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. 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 grades above B? A)  18.25 B)  20.00 C)  13.59 D)  15.87 E)  15.63
What is the expected number of grades above B?


Definitions:

Petty Cash Fund

A small amount of cash kept on hand within a business for minor, day-to-day expenses.

Cash Equivalents

Short-term, highly liquid investments that are readily convertible to known amounts of cash and are subject to an insignificant risk of changes in value.

Highly Liquid Investments

Investments that can be quickly converted into cash without a significant loss in value.

Specific Amount

A precise quantity or financial figure identified within a transaction or financial statement, not generalized or estimated.

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