Math 302 quiz 1 set 3 - Study guides, Class notes & Summaries

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

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 - (MATH 302) Quiz 1. Latest. Questions and Answers. QUIZ 1 Question 1 of 20 1.0/ 1.0 Points Which of the following statements are false regarding a boxplot? A.The height of the box has no significance. B.Boxplots can be used to either describe a single variable in a data set or to compare two (or more) variables C.The length of the box equals the range of the data. D.The right and left of the box are the third and first quartiles Answer Key: C Ques...

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...

Description MATH 302 Quiz 5 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 spent $86.46. Moreo...

MATH 302 QUIZ 5 – QUESTION AND ANSWERS – SET 2 Part 1 of 8 - 3.0/ 3.0 Points Question 1 of 17 1.0/ 1.0 Points A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Assume α = 0.05. What is the test value? Women Men Sample size 50 80 Mean effect 7 6.95 Sample variance 3 4 • A. z = 0.455 ...

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...

MATH 302 MIDTERM EXAM – QUESTION AND ANSWERS – SET 3 Part 1 of 9 - 1.0/ 1.0 Points Question 1 of 25 1.0/ 1.0 Points Given the following boxplot where m is the median value, what statement could be made about the distribution of the data? A. The distribution is negatively skewed. B. The distribution is positively skewed. C. The distribution is approximately symmetric. D. No statement can be made about the data because no data values are shown on the plo...

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 2 Question 1 of 20 1.0/ 1.0 Points The probability of an event and the probability of its complement always sum to: A. 0 B. any value between 0 and 1 C. any positive value D. 1.0 Answer Key: D Question 2 of 20 1.0/ 1.0 Points A jar contains four white marbles, five red marbles, and six black marbles. If a marble is selected at random, find the probability that it is white or black . A. 2/15 B. 2/3 ...