Roll two fair dice. each die has six faces. a. let a be the event that either a 3 or 4 is rolled first followed by an odd number. p(a) = .33 round your answer to two decimal places. b. let b be the event that the sum of the two dice is at most 7. p(b) = round your answer to two decimal places. c. are a and b mutually exclusive events? (yes or no) yes d. are a and b independent or dependent events? (independent or dependent)

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?