During the COVID-19 19 pandemic, 50 patients over the age of 60 were admitted to a hospital, where 25 patients were completely cured without needing to enter the intensive care rooms. The ages of 25 patients were as follows 60 61 62 63 64 65 66 68 68 69 70 73 73 74 75 76 76 81 81 82 86 87 89 90 92 1- calculate the arithmetic mean, median and mode of the patients ages 2- calculate the variance of the patients ages 3. calculate the standard deviation of the patients ages 4 Find the range of the patients ages 5- Is the age 92 is an outlier? Why? 6- Find the five-number summary and draw a box plot showing the values of each quartile 7- determine the interquartile range of the patients ages 8- Is the data of the patients ages skewed to the left or to the right? Explain 9- calculate the coefficient of variation of the patients ages