Math 302 quiz 1 set 1 - Study guides, Class notes & Summaries

MATH 302 Quiz 4 Question and Answers - Set 3 Part 1 of 3 - 11.0/ 11.0 Points Question 1 of 20 1.0/ 1.0 Points If a teacher is trying to prove that a new method of teaching economics is more effective than a traditional one, he/she will conduct a: A.confidence interval B.one-tailed test C.two-tailed test D.point estimate of the population parameter Answer Key: B Question 2 of 20 1.0/ 1.0 Points In an article appearing in Today’s Health a writer states that the average n...

MATH 302 QUIZ 1 – QUESTION AND ANSWERS – SET 1 Question 1 of 20 1.0 / 1.0 Points An advertisement for a car states that it is 10% more powerful than its competitor. This is an example of • A. detached statistics • B. suspect samples • C. changing the subject • D. ambiguous averages Answer Key: A Question 2 of 20 0.0 / 1.0 Points A scatterplot allows one to see: • A. whether there is any relationship between two variabl...

MATH 302 QUIZ 2 – QUESTION AND ANSWERS SET 1

QUIZ 5 MATH 302 GRADED Part 1 of 8 - 3.0/ 3.0 Points Question 1 of 17 1.0/ 1.0 Points A researcher hypothesizes that the variation in the amount of money spent on business dinners is greater than the variation of the amount of money spent on lunches. The variance of nine business dinners was $6.12 and the variance of 12 business lunches was $0.87. What is the test value? • A. 49.50 • B. 9.61 • C. 7.03 • D. 3.10 Answer Key:C...

MATH 302 Quiz 4 Week 4 Knowledge Check – Question and Answers Part 1 of 6 – Calculations of Probabilities 1.A dishwasher has a mean life of 11.5 years with an estimated standard deviation of 1.5 years (“Appliance life 0.0/ 1.0 Points expectancy,” 2013). Assume the life of a dishwasher is normally distributed. Find the number of years that the bottom 10% of dishwasher would last. Round answer to 2 decimal places. 2. Find the area under the standard normal distribution to the left o...

Math 302 Quiz 1 with Answers What is the term for a characteristic or attribute that can assume different values? A pareto chart does NOT have which of the following properties? 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? Suppose that a histogram of a data set is approximately symmetric and “bell shaped”. Approximately, what percent of the observations ...

MATH 302 QUIZ 1 – QUESTION AND ANSWERS – SET 4 Part 1 of 3 - 7.0/ 12.0 Points Question 1 of 20 1.0/ 1.0 Points 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? A. random sampling B. cluster sampling C. stratified sampling D. systematic sampling Answer Key: C Question 2 of 20 0.0/ 1.0 Points Which of the following statistics is not a mea...

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

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

MATH 302 QUIZ 5 – QUESTION AND ANSWERS SET 1 Q-Mart is interested in comparing its male and female customers. Q-Mart would like to know if the amount of money spent by its female charge customers differs, on average, from the amount spent by its male charge customers. To answer this question, an analyst collected random samples of 25 female customers and 22 male customers. Based on these samples, on average, the 25 women charge customers spent $102.23 and the 22 men charge customers spen...