1) A certain university maintains a colony of male mice for research purposes. The ages of the mice are normally distributed with a mean of 60 days and a standard deviation of 5.2. Assume you randomly sample one mouse from the colony. a) The probability his age will be between 55 and 70 days is ____. 0.1959 , 0.8066, 0.8041 , or 0.4980

b) The probability his age will be greater than 68 is ____.

0.4382

0.9382

0.0630

0.0618