Question Two

a$)$ A dataset is received from a study in Tallaght Hospital that details every fracture and

strain recorded in $1$ month in $2022$ in the Emergency Department. Is this a sample or a

population dataset? Please give reasons why with your answer.

$(5$ marks$)$

b$)$ Give three $(3)$ advantages of using a population in preference to using a sample.

$(5$ marks$)$

c$)$ What is Standard Error $($SE$)$ and how does it relate the mean of a sample measured to the

estimated mean of the population?

$(7$ marks$)$

d$)$ Using the summary statistics provided in Appendix A $($on the last page of this exam$),$

calculate the SE for the 'Brand A$\text{'}$ product and report the estimated population mean.

$(8$ marks$)$

$($Total $25$ marks$)$ Appendix A