Question 12 If the sum of squares for a sample containing 51 items equals 400, what is the standard deviation? Question 15 A new gelato boutique recently opened in Katherine's neighborhood. Being a frozen treat connoisseur, Katherine had to stop by. As she walked into the boutique, she was delighted to see that there were many avors available. However. she was most interested in the fact that the prices were very reasonable compared to the prices she saw at many other gelato places. Which of the following is an example of a statistic in Katherine's scenario? The varieties of gelato currently available in the boutique The average price of a serving of gelato at the boutique All of the different types of gelato The average price of a serving of gelato nationwide \fThis graph shows the frequency of common mechanical issues with 1969 Camaros. COMMON MECHANICAL ISSUES WITH 1969 CAMARO 2500 2000 Frequency of Issues 1500 1000 500 0 Engine Clutch Fuel Line Suspension Issue Type What type of data does this graph represent? Interval Nominal Ratio OrdinalDerek recently started a new diet and exercise program. He was curious to know what exercise would help him burn the greatest amount of calories. He asked his friend Mike, who is a personal trainer, for help. During each exercise, Mike recorded the time Derek spent doing an exercise while Derek kept his intensity relatively constant, and they tracked how many calories each exercise burned. Derek and Mike are in effect performing an experiment that contains explanatory and response variables. Which statement best describes the explanatory and response variables involved in this experiment? Exercise type is the response variable and calories burnt is the explanatory variable, since different exercises will cause more calories to be burnt. Calories burnt is the response variable and exercise type is the explanatory variable, because Mike measures exercises as he records calories burnt Calories burnt is the explanatory variable and exercise is the response variable, because the calorie burnt manipulates the type of exercise. Exercise type is the explanatory variable and calories burnt is the response variable, since each exercise causes Derek to burn calories differently. Question 2 The data set below represents the heights [in inches} of students in a particular high school class: What is the range of the data set? 19 inches 21 inches 18 inches 74 inches Question 3 A new shop owner has a store 0.5 miles from where it is advertised. She read that it takes the average adult 8 minutes to walk a half mile. She decides to t:5t this and wants to obtain a random sample of 200 adults. Which of the following would be her hypothesis? The time to walk a half mile is 8 minutes. The time to walk a half mile is less than 8 minutes. The time to walk a half mile is greater than 8 minutes. Most adults will not walk the half mile to her store. Question 4 O Mark this question Which statement best describes the strength, direction, and correlation coefficient of the scatter plot shown here? The strength is weak, the direction is positive, and the correlation coefficient is close to O. D The strength is strong, the direction is positive, and the correlation coefficient is close to 1. The strength is strong, the direction is negative, and the correlation coefficient is close to -1. The strength is strong, the direction is negative, and the correlation coefficient close to 1.The data on this graph represents the number of sales for several types of vehicles in 2015. FREQUENCY OF CAR SALES 2500 2250 2000 1750 1500 1250 Number of Sales 1000 750 500 250 0 Ferrari FF Enzo 458 Spyder Ferrari LaFerrari F12berlinetta Car Model Which vehicle represents the mode? O Ferrari FF O F12berlinetta O Ferrari LaFerrari O Enzo O 458 SpiderGiven the following graph of a skewed distribution, which answer choice best represents how the mean, median, and mode are related? The mode is the largest, followed by the median, and then the mean. The mean is the smallest, followed by the median, and then the mode. The mode is the smallest, followed by the median, and then the mean. The median is the smallest, followed by the mode, and then the mean. Which statement explains what the slope tells you about the variables in this graph? LIFE EXPECTANCY VERSUS YEARS OF DRUG ABUSE Life Expectancy {Years} 'II] I5 Years of Drug Abuse The graph shows that there is a positive relationship between life expectancyr and years of drug abuse. The graph shows that for each year of drug abuse life expectancy went up. The graph shows that there is a negative relationship between life expectancy and years of drug abuse. The graph shows that the longer you live the higher the chance of drug abuse