Straighterline MAT150 Business Statistics Graded Exam 1 (New Version August 2024) Graded 96%

Straighterline MAT150 Business Statistics Graded Exam 1 (New Version August 2024) Graded 96% We are a team of experts offering course/class attendance (including final proctored exams!!) for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia, Nursing, Business etc courses. We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: or : +1 (540) 753-5914. Guaranteed Passing! Question 1 Correct 5.00 points out of 5.00 Flag question Question text Which word is not part of the definition of descriptive statistics? Select one: a. Summarizing b. Organizing c. Predicting d. Presenting Question 2 Correct 5.00 points out of 5.00 Flag question Question text The performance of personal and business investments is measured as a percentage called "return on investment." What type of variable is "return on investment"? Select one: a. Attribute b. Continuousc. Discrete d. Qualitative Question 3 Correct 5.00 points out of 5.00 Flag question Question text Your height and weight are examples of which level of measurement? Select one: a. Nominal b. Interval c. Ratio d. Ordinal Question 4 Correct 5.00 points out of 5.00 Flag question Question text Which of the following is an example of a qualitative variable? Select one: a. The percent change in stock price b. The stock volume of shares sold c. The industry category that a company is in d. The share prices of company stocks Question 5 Correct 5.00 points out of 5.00Flag question Question text When TV advertisements report that "2 out of 3 dentists surveyed indicated they would recommend Brand X toothpaste to their patients," an informed consumer may question the conclusion because Select one: a. the advertisement does not include the total number of dentists surveyed. b. the conclusion is not illustrated with a graph. c. the sample was only 5 dentists. d. the sample of dentists is clearly explained. Question 6 Correct 5.00 points out of 5.00 Flag question Question text In the U.S. Midwest states of Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, and Wisconsin, the number of persons who died from a pandemic virus were (in thousands) 14.4, 6.5, 2.9, 1.8, 10.6, 4.0, 4.3, 1.3, 1.0, 7.1, 1.1, 4.0, respectively. The median number of deaths was Select one: a. about 3.1. b. about 4.9. c. about 4. d. about 15.7. e. about 13.4. Question 7 Correct 5.00 points out of 5.00Flag question Question text A sample of the paramedical fees charged by clinics revealed these amounts: $26, $48, $30, $45, $38, and $26. What is the median charge? Select one: a. $28.00 b. $34.00 c. $26.00 d. $38.00 Question 8 Correct 5.00 points out of 5.00 Flag question Question text The U.S. Federal Aviation Administration reported that passenger revenues on international flights increased from $528 million in 1986 to $5,100 million in 2009. What is the geometric mean annual percent increase in international passenger revenues? Select one: a. 103.6 b. 9.96 c. 27.9 d. 10.4 Question 9 Correct 5.00 points out of 5.00 Flag questionQuestion text The mean, as a measure of central location, would be inappropriate for which one of the following? Select one: a. Ages of adults at a senior citizen center b. Marital status of college students at a particular university c. Number of pages in textbooks on statistics d. Incomes of lawyers Question 10 Correct 5.00 points out of 5.00 Flag question Question text A purchasing agent for a trucking company is shopping for replacement tires for their trucks from two suppliers. The suppliers’ prices are the same. However, Supplier A’s tires have an average life of 60,000 miles with a standard deviation of 10,000 miles. Supplier B’s tires have an average life of 60,000 miles with a standard deviation of 2,000 miles. Which of the following statements is true? Select one: a. The life of Supplier B’s tire is more predictable than the life of Supplier A’s tires. b. On average, Supplier A’s tires have a longer life than Supplier B’s tires. c. The dispersion of Supplier A’s tire life is less than the dispersion of Supplier B’s tire life. d. The two distributions of tire life are the same. Question 11 Correct 5.00 points out of 5.00 Flag question Question text The ages of all employees at a small convenience store are 38, 26, 42, and 22. What is variance of ages for this population?Select one: a. 9.52 b. 90.67 c. 8.25 d. 68.00 Question 12 Incorrect 0.00 points out of 5.00 Flag question Question text The ages of all employees at a small convenience store are 38, 30, 40, and 36. What is standard deviation of ages for this population? Select one: a. 5.01 b. 3.74 c. 41.06 d. 14.00 Question 13 Correct 5.00 points out of 5.00 Flag question Question text The following are the weekly amounts of welfare payments made by the federal government to a sample of six families: $139, $136, $130, $136, $147, and $136. What is the range? Select one: a. $14 b. $0 c. $52 d. $17Question 14 Correct 5.00 points out of 5.00 Flag question Question text A scatter diagram of sales versus production may be constructed by plotting the minimum, first quartile, median, third quartile, and maximum values of each variable. Select one: True False Question 15 Correct 5.00 points out of 5.00 Flag question Question text A dot plot can be used to show _________________. Select one: a. the distribution for a quantitative variable b. the mean, median, and mode c. the interquartile range d. the general shape of a distribution for a nominal qualitative variable Question 16 Correct 5.00 points out of 5.00 Flag questionQuestion text In a scatter diagram, we describe the relationship between __________. Select one: a. two variables, one measured as an ordinal variable and the other as a ratio variable b. a variable measure on the interval or ratio level and time c. two variables measured at the ordinal level d. two variables measured at the interval or ratio level Question 17 Correct 5.00 points out of 5.00 Flag question Question text If a student places in the 99th percentile on an exam, she performed better than 99% of all students who completed the exam. Her performance is similar to a statement based on a __________. Select one: a. histogram b. cumulative frequency distribution c. frequency table d. pie chart Question 18 Correct 5.00 points out of 5.00 Flag question Question text The eighth decile ________. Select one: a. is the same as the 40th percentile b. is the same as the 70th percentile c. contains at least 70% of the observationsd. is the same as the 80th percentile Question 19 Correct 5.00 points out of 5.00 Flag question Question text The 67th percentile is ________. Select one: a. a value one less than 67% of the observations b. the value below which 67% of the observations occur c. the value of the observation at the 67th location d. the value above which 67% of the observations occur Question 20 Correct 5.00 points out of 5.00 Flag question Question text What is the possible range of values for Pearson's coefficient of skewness? Select one: a. 0% and 100% b. −1 and +1 c. Unlimited values d. −3 and +3 Question 21 Correct 5.00 points out of 5.00Flag question Question text A large oil company is studying the number of gallons of gasoline purchased per customer at selfservice pumps. The mean number of gallons is 14, with a standard deviation of 3 gallons. The median is 15 gallons. What is Pearson's coefficient of skewness in this instance? Select one: a. +1.00 b. −1.00 c. +1.65 d. −1.65 Question 22 Correct 5.00 points out of 5.00 Flag question Question text A large oil company is studying the number of gallons of gasoline purchased per customer at selfservice pumps. The mean number of gallons is 10.0, with a standard deviation of 3.0 gallons. The median is 10.75 gallons. What is Pearson's coefficient of skewness in this instance? Select one: a. −0.75 b. +1.00 c. −1.00 d. +0.75 Question 23 Correct 5.00 points out of 5.00Flag question Question text A correlation coefficient of −0.8 indicates strong indirect relationship. Select one: True False Question 24 Correct 5.00 points out of 5.00 Flag question Question text A correlation coefficient is calculated and found to be equal to −1.0. Which of the following statements is true? Select one: a. The points in a scatter plot of the two variables will be in a straight line with a positive slope. b. The points in a scatter plot of the two variables will be in a straight line with a negative slope. c. The points in the scatter plot of the two variables will slope downward from left to right but will not be in a straight line. d. The scatter plot will show no relationship between the two variables. Question 25 Correct 5.00 points out of 5.00 Flag question Question textThe correlation coefficient measures the strength and direction of the relationship between two quantitative variables. Select one: True False