Question

Exhibit 2-4

Michael's Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days.  Their sales records are shown below:

	Number of Laptops Sold	Number of Days
	0 - 19	5
	20 - 39	15
	40 - 59	30
	60 - 79	20
	80 - 99	10
		Total              80

   14.   Refer to Exhibit 2-4.  The class width of the above distribution is

a.	0 to 100
b.	20
c.	80
d.	5

          

   15.   Refer to Exhibit 2-4.  The lower limit of the first class is

a.	5
b.	80
c.	0
d.	20

   16.   Refer to Exhibit 2-4.  If one develops a cumulative frequency distribution for the above data, the last class will have a frequency of

a.	10
b.	100
c.	0 to 100
d.	80

          

   17.   Refer to Exhibit 2-4.  The percentage of days in which the company sold at least 40 laptops is

a.	37.5%
b.	62.5%
c.	90.0%
d.	75.0%

          

   18.   Refer to Exhibit 2-4.  The number of days in which the company sold less than 60 laptops is

a.	20
b.	30
c.	50
d.	60

Answer 1

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