local amusement park was interested in the average wait time at their most popular

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Problem 1: (10 points)

The local amusement park was interested in the average wait time at their most popular roller coaster at the peak park time (2 p.m.). They selected 20 patrons and had them get in line between 2 and 3 p.m. Each was given a stopwatch to record the time they spent in line. The times recorded were as follows (in minutes).

 

118 124 108 116 99 120 139 118 119 121

 80 130 125 100 105 132 120 128 89 95

 

Use Mega-stat to answer the following:

1) Use megastat to construct a frequency table with 6 intervals. Paste the frequency table below and answer the following:  (4 points)

 

 

 

 

 

 

 

a) The frequency of the 3rd interval. (1.5 point)

 

b) The limits of the 4th interval (lower and upper limits). (1.5 point)

 

c) The relative frequency of the 2nd interval.  (1.5 point)

 

d) The cumulative frequency of the 5th interval.  (1.5 point)

 

 

 

 

Problem 2:  (5 points)

The years of service for a sample of five employees in a company XWY are 

4, 4, 2, 3, 5, 6.  Compute and show work without megastat

a) The sample mean     (2 points)

b) The sample median   (2 points)

c) The sample mode   (1 points)

 

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