The Post Office Has Established a Record in a Major

question 118

Multiple Choice

The Post Office has established a record in a major midwestern city for delivering 90 percent of its local mail the next working day. When there are 8 local letters mailed, what is the probability that the number delivered will be within 2 standard deviations of the mean?

• A) .9950
• B) .9619
• C) .8131
• D) .9996

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Definitions:

Numbers Greater

In programming and mathematics, a comparison where values are evaluated to find those greater than a specified number.

<=200

A relational operator that means "less than or equal to 200," often used in programming and mathematical expressions to set conditions.

Less Than

A relational operator that compares two values, returning true if the first value is smaller than the second.

Not Equal To

A comparison operator used in programming and database queries to check if two values are different.