Arandom sample of 300 students was found to have a mean height of 64 inches and a standard deviation of 2.3 inches. what is the standard error of the mean? (assume that the population from which the 300 students are drawn is much larger than 300.)

What is the shape of the height and weight distribution

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.