MATH 302 (Math302)

MATH 302 Quiz 1 Part 1 of 3 - 1. What type of sampling is being employed if the population is divided into economic classes and a sample is chosen from each economic class to be surveyed? 2. Which of the following statistics is not a measure of central location? 3. Gender and State are examples of which type of data? 4. The amount of time needed to run the Boston marathon is an example of which type of variable? 5. The mode is best described as the 6. Given the following boxplot where m ...

MATH 302 Final Exam Part 1 of 16 - 1. A cCompany operates four machines during three shifts each day. From production records, the data in the table below were collected. At the .05 level of significance test to determine if the number of breakdowns is independent of the shift. 2. The chi-square goodness-of-fit test can be used to test for: Part 2 of 16 - 3. In a simple linear regression analysis, the following sum of squares are produced:  4. ____________ is/are especially helpful in...

MATH 302 Final Exam Part 1 of 16 - 1. The data presented in the table below resulted from an experiment in which seeds of 5 different types were planted and the number of seeds that germinated within 5 weeks after planting was recorded for each seed type. At the .01 level of significance, is the proportion of seeds that germinate dependent on the seed type? 2. The chi-square goodness-of-fit test can be used to test for: 3. In choosing the “best-fitting” line through a set of points in ...

Math 302 quiz 1 1. What is the term for a characteristic or attribute that can assume different values? 2. A pareto chart does NOT have which of the following properties? 3. Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately what percent of the observations are within two standard deviations of the mean? 4. Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately, what percent of the observations ar...

MATH 302 Quiz 1 Part 1 of 3 1. A histogram that is positively skewed is also called 2. Researchers may gain insight into the characteristics of a population by examining a 3. A variable is classified as ordinal if: 4. A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is: 5. A pareto chart does NOT have which of the following properties? 6. What type of graph is the figure below? 7. Numerical variables can be subdivided i...

MATH 302 Midterm Exam 2

MATH 302 Midterm Exam Part 1 of 9 - 1. Given the following boxplot where m is the median value, what statement could be made about the distribution of the data? Part 2 of 9 - 2. The table below shows the preferences for elective courses of students who are undecided about their majors.  3. The formal way to revise probabilities based on new information is to use: Part 3 of 9 - 4. Find the variance of the following probability distribution. 5. The following data were obtained fro...

MATH 302 Quiz 1 1. An advertisement for a car states that it is 10% more powerful than its competitor. This is an example of 2. A scatterplot allows one to see: 3. Which of the following are the two most commonly used measures of variability? 4. A histogram that has a single peak and looks approximately the same to the left and right of the peak is called: 5. What kind of relationship between x and y is demonstrated by the scatter plot below? 6. Which of the following statements is true re...

MATH 302 Midterm Exam 1 - Question and Answers

Suggest two hypothesis tests to answer above research problem. For each test: Clearly state the null and alternative hypothesis. Calculate the test statistic and p-value (You may use MINITAB to get the test statistic and p-value. However, you MUST attach any MINITAB outputs). State the final conclusion at 5% significance level.