Pete bought 70 shares of wbc co. at the close price of $41.25. his broker charges him 3% of each share as a transaction fee. how much did pete spend in total to buy this stock?

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.