Help Me

1.) Explain how a boxplot can be used to determine whether a distribution of values is skewed to the right. 2.) Below are dotplots for 3 small datasets A, B, and C. Without performing any calculations, rank the standard deviations of the datasets from lowest to highest. Justify yOUl' answer. o o 3 o I 1 15 2 23 3 35 4 45 5 A 1 1 5 2 2 5 3 3 5 4 45 5 B O O | O O 'lllllllII_ 1 1.5 2 2.5 3 3.5 4 4.5 S C 3.) Create two sets of sample data (with 2+ elements), both having a mean of 10, but one of the data sets should have a standard deviation of U and the other should have a standard deviation of l . 4.) Sugar consumption is a hot topic when it comes to good nutrition. Twelve-ounce case of so drinks oen contain 10 teaspoons of sugar in them. A random sample of 75 college students were asked how many cans of soda drinks they typically consume on a given day. That number was multiplied by It] to give a daily amount of sugar 'om drinking so drinks. The following statistics were calculated: Min=8 n=T5 Max = 62 mean = 31.4 Q] = 25 median = 23 Q3 =33 5:1].6 Dmitry says that there aren't any outliers since 233(11.6) = 6.3 and 23 +3(11.)= 62.3 and the max and min fall within this range. Is Dmitry correct? Why or why not? 5.) Two students take an accounting course from the same professor and had tests on Monday. Shira has class in the morning and Owen has class in the aftemoon. Shira's test score was 74, with her class average at 32 and standard deviation of 3. Owen received a T6 with his class average at 34 with a standard deviation of 6. Assuming that the class test scores follow a symmetric, bell-shaped curve in both classes, which student did better relative to their class? l5.) Relating percentiles to the Empirical Rule, what percentile is at two stande deviations below the mean? What percentile is at the mean":I What percentile is at 1 standard deviation above the mean":I