1.You are being consulted by a level 400 psychology student on her final project. Her work entails estimating the proportion of students at the University of Ghana who is claustrophobic i.e. having an extreme or irrational fear of confined places.
a) What is the population in her case?
b) Would you advise a complete enumeration of the population or a survey? Give reasons.
c) Describe a sampling method you think will help her obtain the best estimate of the proportion of claustrophobic students in the population. Justify the selected sampling method and enumerate its advantages over at least one other sampling method youn

2. The following is the record of ratings of 40 players in a tournament.

 65 85 91 58 43 86

73 33 76 80 57  33

53 29 40  27 72  19

51 67 37   4 18 92

13 45 61  39 23  22

22 41 27  51 63  47

19 35 39 72 

 

a. Find the number of classes or intervals required and the class width.

b. Construct a frequency distribution table using the classes determined in (a).

c. Draw a cumulative frequency curve and use it to find the median and the upper and lower quartiles.

d. Draw a histogram and use it to estimate the mode and the median.