In each of the following parts, state the statistical analysis technique or approach that you would use and give reasons for choosing that analysis. No calculations are required.
1. In each of the following parts, state the statistical analysis technique or approach that you
would use and give reasons for choosing that analysis. No calculations are required.
a. Upper Hill Medical Services would like to know not just whether patients have high blood
pressure, but also what influences having high blood pressure. The Institute of Diabetes and
Kidney Diseases conducted a study on 2,768 adult females. The following variables were
recorded number of times pregnant, plasma glucose concentration a 2 hours in an oral glucose
tolerance test, diastolic blood pressure (mm hg), triceps skin fold thickness (mm), 2-hour serum
insulin (mu u/ml), body mass index (weight in kg/(height in m2
)), diabetes pedigree
age (years) and a test whether the patient shows signs of diabetes (coded 0 if negative, 1 if
positive).
b. Arodi and Company based in Mombasa Kenya is an online t-shirt sales company invested
in Google AdWords advertising as follows KSh 1 million, KSh 1.5 million and KSh 1.2 million
in October, November, and December 2021, respectively. In the same period, their sales grew
steadily in this period KSh 5 million in November, KSh 5.5 million in December and KSh 6
million in January 2022 (predicted). The managers would like to predict February 2022 sales
if they spent KSh 1 million in January 2022.
c. Water for Life Company is considering, in the next five years, undertaking three related
projects in the water sector in Kajiado County in Kenya. However, their available funds are
limited and can, therefore not undertake the three projects but one out of the three. They have
established the mean returns over time and their variability. They want to know which one
project they should undertake.
d. Aisha and Jaramogi Clothing based in Mumia Kenya is an online men’s wear company
invested in ‘Word of Mouth’ advertising as follows KSh 10 million, KSh 15 million and KSh
12 million in November, December 2021, and January 2022, respectively. In the same period,
their sales grew steadily - KSh 15 million in December 2021, KSh 25 million, in January 2022,
2
and KSh 16 million in January 2022. The managers would like to predict February 2022 sales
if they spent KSh 10 million in February 2022.
e. Sustainable Roads Construction Company is considering, in the next five years, undertaking
three related road in Kwale County in Kenya. However, their available funds are limited and
can, therefore, undertake the three projects but one out of the three. They have established the
mean returns over time and their variability. They want to know which one project they should
undertake.
f. Working in partnership with Ministry of Land, Housing and Urban Development; Housing
Finance Company of Kenya would like to allocate some new houses that they have just
constructed to low-income employees within Kibra in Nairobi. To do this, the names of 500
employees would be chosen out by using random numbers.
Simple random sampling
Step by step
Solved in 3 steps
