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The Floppy Disk Company makes 3.5 inch floppy disks for disk drives that are 3.7 inches wide. The width of a manufactures disk is normally distributed with a standard deviation of 0.1 inches. The company manufactures 1000 disks every hour. a) 30% of the disks' widths were less than how many inches? b) 45% of the disks' widths were wider than how many inches? c) In one hour, how many disks would you expect to be between 3.45 inches and 3.55 inches?

The Floppy Disk Company makes 3.5 inch floppy disks for disk drives that are 3.7 inches wide. The width of a manufactures disk is normally distributed with a standard deviation of 0.1 inches. The company manufactures 1000 disks every hour. a) 30% of the disks' widths were less than how many inches? b) 45% of the disks' widths were wider than how many inches? c) In one hour, how many disks would you expect to be between 3.45 inches and 3.55 inches?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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5. The Floppy Disk Company makes 3.5 inch floppy disks for disk drives that are 3.7 inches wide. The width of a manufactures disk is normally distributed with a standard deviation of 0.1 inches. The company manufactures 1000 disks every hour. a) 30% of the disks' widths were less than how many inches? b) 45% of the disks' widths were wider than how many inches? c) In one hour, how many disks would you expect to be between 3.45 inches and 3.55 inches? d) The middle 40% of floppy disks are between which two widths?
Transcribed Image Text:5. The Floppy Disk Company makes 3.5 inch floppy disks for disk drives that are 3.7 inches wide. The width of a manufactures disk is normally distributed with a standard deviation of 0.1 inches. The company manufactures 1000 disks every hour. a) 30% of the disks' widths were less than how many inches? b) 45% of the disks' widths were wider than how many inches? c) In one hour, how many disks would you expect to be between 3.45 inches and 3.55 inches? d) The middle 40% of floppy disks are between which two widths?
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