Eli has a cube with sides numbered 1-6 and a spinner with 3 equal sections late;ed a, b and c he rolls the cube and the spinner how many outcomes are possible

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.