David wise handles his own investment portfolio and has done so for so many years. listed below is the holding time( recorded to the nearest whole year) between purchase and sale for his collection of 36 socks.
8 8 6 11 11 9 8 5 11 4 8 5 14 7 12 8 6 11 9 7
9 15 8 8 12 5 9 8 5 9 10 11 3 9 8 6
how many classes would you purpose?
organize the data into a frequency distribution? round your class values to 1 decimal place.

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?