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Suppose X ~ N (15, 4). Between what a values does 68.23% of the data lie? The range of a values is centered at the mean of the distribution (i.e., 15). Enter your answers in increasing order, to the nearest integer. 68.23% of the data lie between |Number and Number The average height of basswood trees in a nursery is 3.4 m. If the heights are normally distributed with a standard deviation of 1.07 m, find the probability that a tree is less than 3.5 m tall 0 0.4298 0 0.8982 0 0.7177 O 0.5372 The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and a standard deviation of 1.7 days. (a) What is the probability of spending more than four days in recovery? 0 0.1841 0 0.2222 O 0.5700 0 0.7778 (b) The 80th percentile for recovery times is? 0 6.73 0 6.19 0 3.13 O 6.16