MA214 Quiz 2 Explanations 1 .pdf - MA214 Quiz 2...

MA214 Quiz 2 Explanations
a. The heights in centimeters of 44 random male psychology students of the Free University of
Amsterdam (VUA) were measured (data collected there). Suppose the estimated mean and
standard deviation (based on this sample) of the height of all male VUA psychology students
are 183.5 cm and 7.53, respectively. Create an approximate 95% confidence interval for the
population mean height of male VUA psychology students.
c. Suppose we have a sample of only the first 22 male students, with estimated mean and
standard deviation 184.7 cm and 6.31, respectively. Create a 90% confidence interval for the
population mean height of male VUA psychology students.