Math 1342 Sample Final Exam
1. 25 pts State Gasoline Taxes A random sample of state gasoline taxes (in cents) is shown here
for 12 states.
a) Use Stat Crunch to find the Summary Statistics (include IQR, exclude Std. Error) and paste in
the results.
b) Use Stat Crunch to create and paste in the Box Plot
c) Comment on the Box Plot in terms of median being shifted left or right and if there any
outliers.
d) Use Stat Crunch to form the “correct” 92% confidence interval for the mean paste in the
results and then make a type the interval form.
e) From previous data the mean was 47. Is there enough evidence at alpha = 0.05 to conclude
that the mean has decreased. Use Stat Crunch, paste in the results. Use the P Value Method
to conclude to make a conclusion.
2. 25 pts Forest Fires and Acres Burned Number of fires and number of acres burned are as
follows:
a) Use Stat Crunch to create a scatter plot and paste in your results.
b) Use Stat Crunch to calculate the correlation coefficient and paste in your results.
c) Use Stat Crunch to find the equation of the regression line, predict for x= 60, paste in the
results as well as the graph of the best line and then type in your equation.
3. 25 pts Goodness of Fit – Truck Colors In a recent year, the most popular colors for light
trucks were white, 30%; black, 17%; red, 14%; silver, 12%; gray, 11%; blue, 8%; and other, 8%. A
survey of light truck owners in a particular area revealed the following. At ? = 0.05, do the
proportions differ from those stated?
a) Enter the data into Stat Crunch and paste in your data table.
b) Use Stat Crunch for Goodness of Fit and paste in your results.
c) Use the P Value Method to conclude to make a conclusion.
4. 25 pts -Number of Farms The numbers (in thousands) of farms per state found in three
sections of the country are listed next. Test the claim at ? = 0.05 that the mean number of
farms is the same across these three geographic divisions.
a) Enter the data into Stat Crunch and paste in your data table.
b) Use Stat Crunch for ANOVA and paste in your results.
c) Use the P Value Method to conclude to make a conclusion.
ScholarMatic: Explanation & Answer
Your ready answer from a verified tutor is just a click away for as little as $14.99
Click Order Now to get 100% Original Answer Customized to your instructions!
