1. Sixty college freshmen were asked to give the number of children in their families (number of their brothers and sisters plus 1). The data collected follow:

1. Find the mean, median, standard deviation, \(q_{1}\), and \(q_{3}\) for the following data. Does the mode exist? (USE MINITAB AS MUCH AS POSSIBLE.)
2. What percentage of the data is within one standard deviation of the mean?
3. What percentage of the data is within two standard deviations of the mean?
4. What percentage of the data is within three standard deviations of the mean?
5. Does the data appear to come from a normal distribution? Make detailed comments based on your conclusions above.

2. A survey was conducted at a large metropolitan university campus. Twenty-four students were interviewed. Two of the questions asked were: "How many hours per week are you employed?" and "How many credit hours are you currently registered for"

b. Is there a strong correlation between \(x\) and \(y\) ?

c. Use the regression line to predict the number of credit hours for a student employed 18 hours a week. Comment on how accurate this prediction might be.

d. Repeat parts a, b, and \(c\) for those students who are employed (i.e. exclude people who do not work). Which of the two approaches is better for the 18 hour prediction?

Price: $14.29

Solution: The downloadable solution consists of 8 pages, 629 words and 11 charts.
Deliverable: Word Document