Question

A music school has budgeted to purchase 3 musical instruments. They plan to purchase a piano...

A music school has budgeted to purchase 3 musical instruments. They plan to purchase a piano costing $3,000, a guitar costing $600, and a drum set costing $700. The mean cost for a piano is $3,500 with a standard deviation of $2,500. The mean cost for a guitar is $550 with a standard deviation of $250. The mean cost for drums is $1000 with a standard deviation of $100. (Enter your answers to two decimal places.)

How many standard deviations above or below the average piano cost is the piano?

_____standard deviations  ________(above or below) the average


How many standard deviations above or below the average guitar cost is the guitar?

______ standard deviations ______ (above or below) the average


How many standard deviations above or below the average drum set cost is the drum set?

______ standard deviations _______(above or below) the average


Which cost is the lowest, when compared to other instruments of the same type?

drum set, guitar or piano


Which cost is the highest when compared to other instruments of the same type.

drum set, guitar or piano

Math   Statistics-And-Probability   
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