Section Exercise 4-23 (Algo) In fuel economy tests in city driving conditions, a hybrid vehicle's mean was 46.6 mpg with a standard deviation of 2.7 mpg. A comparably sized gasoline vehicle's mean was 27.8 mpg with a standard deviation of 3.3 mpg. Which vehicle's mpg was more consistent in relative terms? (Round your answers to 1 decimal places.) Coefficient of hybrid vehicle % Coefficient of gasoline vehicle Which vehicle's mpg was more consistent in relative terms? O hybrid O gasolineStock A: X - $24.50, s - 5.25 Stock B. X - $147.25, s = 12 25 Stock C. X - $5.75, s = 2.08 (a) Find the coefficient of variation for prices of these three stocks. (Round your answers to 2 decimal places.) Stock Coefficient of variation Stock A o Stock B Stock C % (b) Which stock has the greatest relative variation? O Stock A O Stock BIn fuel economy tests in city driving conditions, a hybrid vehicle's mean was 46.6 mpg with a standard deviation of 2.7 mpg. A comparably sized gasoline vehicle's mean was 27.8 mpg with a standard deviation of 3.3 mpg. Which vehicle's mpg was more consistent in relative terms? (Round your answers to 1 decimal places.) Coefficient of hybrid vehicle Coefficient of gasoline vehicle Which vehicle's mpg was more consistent in relative terms? O hybrid O gasoline(d) What does this exercise show? (You may select more than one answer. Click the box with a check mark for the correct answer and double click to empty the box for the wrong answer.) ? The sample standard deviation is larger than the population standard deviation for the same data set. ? Samples can have similar means but different standard deviations. ? The sample standard deviation is smaller than the population standard deviation for the same data set. ? Samples can have different means but smaller standard deviations.The mean monthly rent of students at Oxnard University is $810 with a standard deviation of $235. (a) John's rent is $1,370. What is his standardized z-score? (Round your answer to 3 decimal places.) N (b) Is John's rent an outlier? Yes O NO(b) Is the distribution skewed? O Yes, the distribution is skewed right. O No, the distribution is symmetric. O Yes, the distribution is skewed left. (c) Is the mode a useful measure of center for this data set? O Yes O NODays on the market are shown for the 36 most recent home sales in the city of Sonando Hills. 109 179 58 65 156 72 49 53 5 28 46 33 94 121 117 109 174 92 159 171 48 45 45 80 77 158 126 45 49 163 153 135 91 64 124 Click here for the Excel Data File (a) Calculate the mean, median, and mode. (Round your answers to 2 decimal places.) Mean 56.22 Median 47.00 Mode 44(a) Campus health center visits (12 students): 0, 0, 0, 0, 0, 1, 1, 1, 3, 4, 5, 22 (Round your answers to 2 decimal places.) Mean 4.25 Median 1.50 Mode (b) Red Rocks ticket prices (9 concerts): 44, 45, 58, 65, 67, 67, 67, 70, 78 (Round your answers to 2 decimal places.) Mean 53.56 Median 55.00 Mode 36 00(a) By Chebyshev's Theorem, at least how many students in a class of 200 would score within the range / + 20? Number of students (b) By the Empirical Rule, how many students in a class of 200 would score within the range / + 20 ? (Round your answer to the nearest whole number.) Number of studentsCheck my 3 For each data set, answer the following questions. Data Set A: 14, 15, 16 Data Set B: 12, 13, 14, 15, 16, 17, 18 Data Set C: 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 ped (a-c) Find the mean, sample standard deviation-treating the data as a sample, and the population standard deviation-treating the data as a population. (Round your answers to 4 decimal places.) Dok nt Data Set A Data Set B Data Set C Mean int Sample Standard Deviation ences Population Standard DeviationYes O NO (c) For each day. note strengths or weaknesses of each statistic of center. (You may select more than one answer. Click the box with a check mark for the correct answer and double click to empty the box for the wrong answer.) ? Where the mean and median disagree, one should look at the shape of the distribution to see which measure is more appropriate. ? The mode is a reliable measure of central tendency for quantitative data. Where the mean and median agree, one should look at the shape of the distribution to see which measure is more appropriate. ? The mode is an unreliable measure of central tendency for quantitative data. Prev 1 of 20 NextClick here for the Excel Data File (a) Calculate the mean and standard deviation for each sample. (Round your answers to 3 decimal places.) 1X Sauce A Sauce B (b) Calculate the coefficient of variation for each sample. (Enter your answer as a percentage rounded to 1 decimal place.) CVA CVBCheck my w Noodles and Company tested consumer reaction to two spaghetti sauces. Each of 70 judges rated both sauces on a scale of 1 (worst) to 10 (best) using several taste criteria. To correct for possible bias in tasting order, half the judges tasted Sauce A first, while the other half tasted Sauce B first. Actual results are shown below for "overall liking." Sauce A: 8, 8, 4, 6, 8, 6, 7, 5, 3, 8, 5, 6, 7, 7, 6, 5, 8, 9, 6, 8, 8, 5, 8, 7, 5, 3, 6, 8, 7, 5, 7, 3, 6, 7, 7, 6, 6, 4, 5, 7, 8, 6, 7, 7, 8, 7, 7, 7, 6, 8, 8, 7, 8, 6, 2, 7, 7, 7, 8, 8, 5, 5, 6, 7, 6, 7, 2, 5, 6, 5 Sauce B: 6, 6, 2, 6, 7, 6, 1, 9, 8, 6, 8, 6, 3, 5, 6, 9, 3, 8, 5, 5, 6, 7, 7, 8, 8, 8, 2, 7, 6, 7, 6, 8, 8, 6, 5, 3, 6, 7, 5, 7, 7, 7, 6, 5, 8, 5, 5, 1, 8, 5, 8, 6, 1, 8, 6, 6, 5, 2, 7, 6, 8, 8, 5, 7, 2, 5, 8, 5, 6, 5 Click here for the Excel Data File (a) Calculate the mean and standard deviation for each sample. (Round your answers to 3 decimal places.) Sauce A Sauce B(c) Sodium grams in canned soup (8 varieties): 233, 249, 275, 286, 292, 313, 329, 354 (Round your answers to 2 decimal places.) Mean 295.25 Median 296.50 Mode No mode(b) Calculate the coefficient of variation for each sample. (Enter your answer as a percentage rounded to 1 decimal place.) CVA CVB (c) What is your conclusion about consumer preferences for the two sauces? O On average, consumers seem to prefer Sauce A over Sauce B. O On average, consumers seem to prefer Sauce B over Sauce A.Data Set A: 14, 15, 16 Data Set B: 12, 13, 14, 15, 16, 17, 18 Data Set C: 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 (a-c) Find the mean, sample standard deviation-treating the data as a sample, and the population standard deviation-treating the data as a population. (Round your answers to 4 decimal places.) Data Set A Data Set B Data Set C Mean Sample Standard Deviation Population Standard Deviationped ook (d) What does this exercise show? (You may select more than one answer. Click the box with a check mark for the correct answer and double click to empty the box for the wrong answer.) lint Tint ? The sample standard deviation is larger than the population standard deviation for the same data set. rences ? Samples can have similar means but different standard deviations. ? The sample standard deviation is smaller than the population standard deviation for the same data set. ? Samples can have different means but smaller standard deviations.(a) Find the mean, median, and mode. (Round your answers to 2 decimal places.) Descriptive Data Statistics Count Mean Median Mode (b) Are the data symmetric or skewed? If skewed, which direction? Symmetric Skewed right Skewed leftA vehicle emissions testing facility can process up to 100 cars in an hour and the facility is open 7 am-5 pm Monday-Thursday. Shown below are the number of cars processed each hour last week. Monday 60, 60, 71, 75, 99, 73, 74, 60, 88, 60 Tuesday 79, 70, 65, 79, 65, 74, 79, 65, 65, 79 Wednesday 74, 67, 99, 72, 71, 72, 66, 74, 95, 70 Thursday 80, 98, 97, 70, 88, 85, 90, 93, 49, 10 Click here for the Excel Data File (a) Find the mean, median, and mode for each day. (Leave no cells blank - be certain to select "None" wherever required. Round your answers to 2 decimal places.) Monday Tuesday Wednesday Thursday Count 10.00 10.00 10.00 10.00 72.00 76.00 76.00 Mean 72.00 72.00 72.00 72.00 86 50 Median Mode 60