Statistics (Coursework Sample)

BBUS 423 Assignment Name Institution Course Professor Date Part 1: Descriptive Statistics Qn1. The table below highlight the summary statistics of gender, marital status, age, and income. The respondents’ gender was a nominal level of measurement. The analysis affirmed that there were 560 male respondents which accounted for 56% of the sample while females were 440 which accounted for 44% of the sample. Marital status was a nominal level of measurement. The unmarried respondents were 110 which accounted for 11% of the sample while married respondents were 890 which accounted for 89% of the sample. Age was a ratio level of measurement variable. The largest number of respondents were aged between 40 and 49 years (440, 44%) while the least number of respondents were aged between 20 and 29 years (20, 2%). Income was a ratio level of measurement variable. The largest number of respondents had a household income of between $76,000 and $100,000 while the least number of respondents had a household income of under $50,000. Qn2 The plan to purchase or lease a vehicle was a nominal variable. The analysis indicated that 64% (640) of the Americas had no plan to purchase or lease a vehicle for the upcoming year, while 36% (360) of the Americans had a plan to purchase or lease a vehicle for the upcoming year. Qn3 The table below indicates the summary statistics of automobile desirability for the respondents in the sample. The analysis indicated that the most desirable model of automobile was Runabout with Stowage-2 Seat Electric and Gasoline Hybrid. This automobile model had the highest desirability mean of 3.96. The least desired automobile model was Super Cycle-1 Seat All-Electric Motorcycle with a desirability mean of 2.64. Part 2: Parameter estimation Qn.1 The table above indicates the summary statistics of the respondents who drive conservatively to preserve fuel. The 95% confidence interval analysis indicated that the mean of the variable was between 4.90 and 5.15. The confidence interval asserts that we are 95% confident that the mean perception of respondents to drive conservatively to preserve fuel was between 4.90 and 5.15. Qn2 The table above indicate the summary statistics of the respondent’s desirability for Economy gas-4 Seat automobile model. The 95% confidence interval analysis indicated that the mean desirability was between 3.12 and 3.30. The confidence interval asserts that we are 95% confident that the mean desirability of Economy gas-4 Seat automobile model was between 3.12 and 3.30. Part 3: Hypothesis tests The one sample t-tests below were conducted at a significance level of 0.05. The hypothesis tests indicate the desirability o...