Twenty students took an exam in Biology. The variance of the exam is 10 and the sum of the fourth power of the deviation from the mean is 3,600. Is the distribution of scores of the students is

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Sketch one cycle if the cosine function y=2cos2theta

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.