A study which produces large amounts of secondary variance will probably
be found to be extremely low in
a. sampling error
b. Type 2 error
c. random error
d. internal validity
Question 2
The standard deviation of the population of elementary school math-
achievement scores is 7.78. A random sample of 20 elementary school children
was selected and yielded a mean achievement score of 80.04.
a. Calculate the standard error of the mean.
b. Use the z test to establish whether this sample could be representative of
the general population of elementary school children whose mean math
achievement score is known to be 78.00.
Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia.
Carnivorous plants, such as this pitcher plant (Sarracenia purpurea) are commonly found in bog habit
Large Skipper
Results from sequential study of two cohorts tested at three ages and at three different points in t
Adding additional amounts of ethyl alcohol (ethanol) increases the frequency reading.
Flow Patterns and Large-Scale Weather