Normal Distributions Application

Front

What percent of a normal distribution lies outside of ±3 standard deviations?

Back

.3%

Front

What is the mean size of the floppy disks manufactured by the Floppy Disk Company?

Back

3.5 inches

Front

What is the standard deviation of the floppy disks manufactured by the Floppy Disk Company?

Back

0.1 inches

Front

If the Floppy Disk Company manufactures 1000 disks every hour, how many disks would you expect to be between 3.4 inches and 3.7 inches?

Back

815

Front

What percent of the data in a normal distribution is typically found within ±1 standard deviation from the mean?

Back

68%.

Front

What percent of the data in a normal distribution is typically found within ±2 standard deviations from the mean?

Back

95%.

Front

What percent of the data in a normal distribution is typically found within ±3 standard deviations from the mean?

Back

99.7%.

Front

What is the mean shelf life of the dairy product mentioned?

Back

12 days

Front

What is the standard deviation of the shelf life of the dairy product?

Back

3 days

Front

About what percent of the dairy products last between 12 and 15 days?

Back

34%.