An investment portfolio is shown below. Investment Amount Invested ROR Savings Account $3,200 2.1% Municipal Bond $4,900 4.5% Preferred Stock $940 10.5% Common Stock A $1,675 3.5% Using technology, calculate the weighted dollar amount of the savings account. $58.63 $58.63 $67.20 $67.20 An event manager is tracking participation in a tournament by age group. The manager created the following histogram: Tournament Participants Number of PeOpIe O 1?] 2O 39 .10 5F] 60 79 Age Group (yr) What percentage of the tournament participants are under the age of 20? Round to the nearest whole percent. 10% 23% 30% 77% A student surveyed a group of friends about the different types of pizza they like. The results are shown in the graph below. Pizza 5 a 4 U C '9 t 3 '6 3 2 E 3 z 1 l 0 Cheese Mushroom Pepperoni Supreme PIZZB Type What percentage of the friends like mushroom and pepperoni pizza? 10% 20% 30% 70% A data set comparing a woman's shoe size to her height is represented by the table. Shoe Size Height (inches) 7.5 63 8 70.5 12 68 7 71 9 69.5 10 70 12 75 12.5 63 14 72 Using technology, calculate the line of best fit. Identify and interpret the slope in this scenario. The slope of the line of best fit is 0.25. Each time the shoe size increases by one, the height increases by 0.25 inches. The slope of the line of best fit is 0.25. Each time the shoe size increases by 0.25, the height increases by one inch. The slope of the line of best fit is 66.6. Each time the shoe size increases by one, the height increases by 66.6 inches. The slope of the line of best fit is 66.6. Each time the shoe size increases by 66.6, the height increases by one inch. Data were collected on the distance a baseball will travel when hit by a baseball bat at a certain speed. The speed, s, is measured in miles per hour, and distance, y, is measured in yards. The line of fit is given by )7 = 3.98 + 53.595. If the ball travels for a duration of 5 seconds, what is the predicted distance of the ball? 267.95 feet 271 .93 feet 283.87 feet 287.85 feet A sample of 245 high school students from grades 910 and 1112 were asked to choose the kind of band to have play at a school dance: rap, rock, or country. 51 % of the sample is grades 910. From the sample, it is determined that 16.3% were students in grades 910 who prefer a rap band and 22.4% were students in grades 910 who prefer a country band. 14.3% were of students in grades 1112 who prefer a country band, while 10.2% were students in grades 111 2 who prefer a rock band. The most popular choice was rap, with 40.8% of students making it their preferred option. Which of the following is a correct twoway relative frequency table for the data? School Dance Band Preference Rap Rock Country Rowtotals Grade591O 16312.2 22.4 51 Grades11-12 24.5 10.2 14.3 49 Column totals 40.8 22.4 36.7 100 School Dance Band Preference Rap Rock Country Rowtotals Grade591O 16.3% 12.3% 22.4% 51% Grades11-12 24.5% 10.2% 14.3% 49% Columntotals 40.8% 22.5% 36.7% 100% School Dance Band Preference Rap Rock Country Row totals Grades 9-10 16.3% 12.3% 22.4% 51% Grades 11-12 24.5% 10.2% 14.3% 49% Column totals 40.8% 22.5% 36.7% 100% School Dance Band Preference Rap Rock Country Row totals Grades 9-10 40 30 55 125 Grades 11-12 60 25 35 120 Column totals 100 55 90 245 School Dance Band Preference Rap Rock Country Row totals Grades 9-10 0.163 0.122 0.224 125 Grades 11-12 0.245 0.102 0.143 120 Column totals 100 55 90 245A group of 15 athletes participated in a golf competition. Their scores are below: Score (points) 1 2 3 4 5 NumberofAthletes 1 2 3 4 5 Would a dot plot or a histogram best represent the data presented here? Why? Histogram, because a large number of scores are reported as ranges Histogram, because a small number of scores are reported individually Dot plot, because a large number of scores are reported as ranges Dot plot, because a small number of scores are reported individually A nursery is recording the heights of its available fruit trees. Which of the following displays could be used to represent the data, and why? Bar chart, because tree height is numerical Box plot, because tree height is numerical Histogram, because tree height is categorical Stem-and-leaf-plot, because tree height is categorical