Q3. Dr Simin is interested in determining the effect of gender on medical doctors' job

satisfaction. Data collected from a randomly selected sample follow. Exploratory Data

Analysis revealed the data were normally distributed. (=0.05)

Male Female

1.0 4.0

3.0 5.0

2.0 4.0

3.0 5.0

1.0 4.0

1.0 3.0

5.0 3.0

4.0 4.0

3.0 5.0

2.0 5.0

2.0 3.0

4.0 3.0

4.0 5.0

a) Define (DV & IV) and Scale of Measurement of each variable

b) What is the objective of this study?

c) State the Null and Alternative hypothesis

d) What is the value of Test statistic?

e) Make decision and conclusion

f) Write a short report

Q4. Individuals filing federal income tax returns prior to March 31 received an average

refund of $1056. Consider the population of "last-minute" filers who mail their tax

return during the last five days of the income tax period (typically April 10 to April 15).

A researcher suggests that a reason individuals wait until the last five days is

that on average last-minute filers receive lower refunds than do early filers.

A) Develop appropriate hypotheses (H0 & HA)

B) Test the hypothesis for a sample of 400 individuals who filed a tax return

between April 10 and 15, the sample mean refund was $910 and standard

deviation of population was $1600. ( = 0.05)