Impoverished children tend to be sick more often and show poorer school performance

Which set of characteristics will produce the smallest value for the estimated standard error?

A) ?A large sample size and a small sample variance B) ?A large sample size and a large sample variance C) ?A small sample size and a small sample variance D) ?A small sample size and a large sample variance

Scores were obtained from a random sample of 55 Psychology students on measures of logical reasoning (x1), spatial reasoning (x2), math ability (x3), and statistical knowledge (y). The sum of squares for the ? values was 18 and the sum of squares for y was 54. Therefore, ______.

a. Fobs = 25.5 b. Fobs = 0.03 c. Fobs = 2.92 d. Fobs = 8.50