Here is the question...

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.

Tan198=asin164=? how to solve this? ?

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3