Just put any question u want i just cant even think of one right now. im pretty stressed and i need help. also thank you!<3 Initial Question:
What I Know:
Point of Confusion:
Steps:

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.