Math 1342 Final Exam
1. 25 pts Stock Prices A random sample of stock prices per share (in dollars) is shown.
Use Stat Crunch to find the Summary Statistics (include IQR, exclude Std. Error) and paste in the
results.
a) Use Stat Crunch to create and paste in the Box Plot
b) Comment on the Box Plot in terms of median being shifted left or right and if there any
outliers.
c) Use Stat Crunch to form the “correct” 97% confidence interval for the mean paste in the
results and then make a type the interval form.
d) From previous data the mean was 35. Is there enough evidence at alpha = 0.05 to conclude
that the mean has increased. Use Stat Crunch, paste in the results. Use the P Value Method
to conclude to make a conclusion.
2. 25 pts Triples and Home Runs The number of triples and the number of home runs obtained
by a selected sample of MLB players are shown.
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= 37, 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 Ages of Head Start Program Students The Head Start Program
provides a wide range of services to low-income children up to the age of 5 and their families.
Its goals are to provide services to improve social and learning skills and to improve health and
nutrition status so that the participants can begin school on an equal footing with their more
advantaged peers. The distribution of ages for participating children is as follows: 4% five-yearolds,
52% four-year-olds, 34% three-year-olds, and 10% under 3 years. When the program was
assessed in a particular region, it was found that of the 200 participants, 20 were 5 years old,
120 were 4 years old, 40 were 3 years old, and 20 were under 3 years. Is there sufficient
evidence at ? = 0.05 that the proportions differ from the program’s?
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 – Calories in Fast-Food Sandwiches Three popular fast-food restaurant franchises
specializing in burgers were surveyed to find out the number of calories in their frequently
ordered sandwiches. At the 0.05 level of significance, can it be concluded that a difference in
mean number of calories per burger exists?
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.
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