A sample of 21 test completion times [in minutes, rounded for convenience] is given below. The duration of the test was ill} minutes. The data have already been ordered: 28. 5-5. 53. 62. 6:3. 64. 65. 66. Ed. so. 68. 2'1, 24. 83. 84. as. 8?. BE. 89. 9'3. 91] How many outliers are in the data set? Note: Please use the method outlined in the Course Notes when determining quantiles in order to check for outliers. A] [I B] 1 C] 2 B] More dian 2 You are told that the mean of a random sample of22 observations is 22. The sample variance is 3|]. An observation equal to the sample mean is added to the sample. With this observation added, how would you compare the new sample variance to the original sample variance? A] The new sample variance would be higher. E] The new sample variance would equal die old one. C] The new sample variance would be lower. D] We cannot compare the sample variances without having the actual sample observations. Consider the following sample of heights, in inches: 65. 6?, 33. so. 69, T2, 23, 64, vs, 5. TH], 2|] Suppose that the data needed to be converted to feet. producing a new set of converted values. How would the sample variance of the converted data {new} compare to the sample variance of the original data [old]? Note: There are 12 inches in a foot. A] The new variance would he 12 times that of the old variance. E] The new variance would be 12144 of the old variance. C] The new variance would be 144 times that of the variance. D] The new variance would be 1j12 of the old variance