A survey asked 54715 random adults the question "How many children have you ever had?" The responses are shown below. The sample mean is 1.95 and the standard deviation is 1.79. Find the standard error of the sample mean of a random sample of 2140 adults.

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.