True or false: every student's t-distribution with n < n, n the number in the sample and n the number in the population, will be less peaked and have thinner tails.

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?