MAT 150 Final Exam Questions and Answers | Latest Update 2023/2024 | Straighterline

MAT 150 Final Exam Questions and Answers | Latest Update 2023/2024 | Straighterline. Which of the following is an example of a nominal variable? Select one: a. age b. gender c. height d. IQ Question 3 Correct 8.33 points out of 8.33 Flag question Question text What sort of data are temperature measurements? Select one: a. interval b. nominal c. ordinal d. ratio Question 4 Correct 8.33 points out of 8.33 Flag question Question text Based on the graph, which statement best describes the relationship between daily high temperatures and the number of people going to the beach? Select one: a. There is no relationship. b. It is a positive linear relationship. c. It is a negative linear relationship. d. It is a curvilinear relationship. Question 5 Correct 8.33 points out of 8.33 Flag question Question text The table shows the number of train tickets Carl purchased to each station over the last month and the fare to each station. What was the average cost per ride? Select one: a. $3.60 b. $4.15 c. $5.45 d. $5.80 Question 6 Incorrect 0.00 points out of 8.33 Flag question Question text The outcomes observed in an experiment are: 2, 8, 3, 10, 4, and 9. What is the sample variance? Select one: a. 4.1 b. 7.6 c. 9.3 d. 11.6 Question 7 Correct 8.33 points out of 8.33 Flag question Question text Jason collects information about annual family income from each student at his college. He computes both the mean and median family income across all students and is surprised to find that the mean income is much higher than the median income. What is the most likely reason for the difference in the mean and the median? Select one: a. The sample size is too small. b. The median tends to produce lower estimates of central tendency. c. The median is not an appropriate estimate for annual family income’s level of measurement. d. The mean is more affected by a small number of extreme values. Question 8 Correct 8.33 points out of 8.33 Flag question Question text An instructor administers a test to a class of 30 students and observes that the scores are close to normally distributed with a mean score of 40 and a standard deviation of 10. What can you conclude from these results? Select one: a. Approximately 2/3 of the class scored between 30 and 50 on the test. b. The lowest score on the test was 30 and the highest score was 50. c. Students found the test to be difficult. d. The average student scored at the 40th percentile. Question 9 Correct 8.33 points out of 8.33 Flag question Question text Laura's quiz scores during the semester were 87, 82, 90, 92, and 84. What was her mean score? Select one: a. 79 b. 84 c. 86 d. 87 Question 10 Correct 8.33 points out of 8.33 Flag question Question text The table lists the populations and relative frequencies of car ownership in four neighboring cities. Which city has the most cars? Select one: a. Northland b. Southland c. Eastville d. Westville Question 11 Correct 8.33 points out of 8.33 Flag question Question text In the figure shown, Sample A and Sample B have the same Select one: a. median. b. quartiles. c. range. d. variance. Question 12 Correct 8.33 points out of 8.33 Flag question Question text The contingency table describes the living arrangements of students at a small college. What percentage of the students are women who live in off-campus housing? Select one: a. 21 b. 23 c. 30 d. 44 Question 13 Incorrect 0.00 points out of 8.33 Flag question Question text Which of these correlation coefficients shows the strongest linear relationship between two variables? Select one: a. -0.31 b. -0.22 c. +0.14 d. +0.20 Question 14 Correct 8.33 points out of 8.33 Flag question Question text What conclusion can be drawn from the graph of average daily temperature and hot beverage sales? Select one: a. There is a negative correlation between average daily temperature and hot beverage sales. b. There is a positive correlation between average daily temperature and hot beverage sales. c. There is a curvilinear correlation between average daily temperature and hot beverage sales. d. There is no correlation between average daily temperature and hot beverage sales. Question 15 Correct 8.33 points out of 8.33 Flag question Question text The coefficient of correlation r is a measure of statistical relationships that are Select one: a. causal. b. linear. c. positive. d. significant. Question 16 Correct 8.33 points out of 8.33 Flag question Question text A bag contains marbles of different colors (red, yellow, and blue) and different sizes (small and large). The probability of picking a blue marble out of the bag is 0.10 and the probability of picking a large marble is 0.50. What is the probability of picking a large blue marble? Select one: a. 0.05 b. 0.10 c. 0.50 d. 0.60 Question 17 Correct 8.33 points out of 8.33 Flag question Question text A swimmer, Sarah, hopes to compete in an upcoming meet. There are 8 team members eligible for the breaststroke event at the meet, but only 1 team member will be randomly selected to compete in that event. There are 4 team members eligible for the butterfly event at the meet, but only 1 team member will be randomly selected to compete in that event. Sarah is eligible to compete in both events. What is her chance of being selected for at least one of the two events? Select one: a. 1 in 4 b. 1 in 8 c. 3 in 8 d. 3 in 12 Question 18 Incorrect 0.00 points out of 8.33 Flag question Question text The graduating class of a small college has 170 men and 195 women. If grades and gender are independent, what is the probability that the students with the two highest grade averages will both be women?