In a group of 72 students; 27 are normal; 13 are abnormal, and32 are normal abnormal. Find the probability that a student picked from this group at random is either normal or abnormal?

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants. d. selecting individuals at random.

The term equestrian relates to which animal? bulls cows horses pigs

This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.