Suppose that the relation H is defined as follows. H={(-8, -1), (5, 6), (6, -1)}
Give the domain and range of H.
Write your answers using set notation.
domain =
range = 0

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.