Question 1

a) The following data represent the number of years patients survived after being diagnosed with

terminal cancer: 

(i) Construct a stem-and-leaf display 

(ii) Supposedly you are inserting the above stem-and-leaf display in a report to be

submitted to management, write a short comment on the diagram. 

The following data shows the weight (in kg) of 13 crabs found in a restaurant on a particular evening: 

Compute the mean and median. (3 marks)

(ii) Determine the shape of the distribution based on the sample data? Explain your

conclusion. 

Question 2

(a) It is noted that 8% of Kaplan students are left handed. If twenty (20) students are randomly selected,

calculate the

i. probability that none of them are left-handed, 

probability that at most 2 are left-handed, 

mean and standard deviation for the number of left-handed students

Do you agree that “if two events are mutually exclusive then these two events will be independent”?

Why?

Provide one business-related example each, with explanation, for mutually exclusive and

independent events. 

Read less