You obtained robs= +.39 when correlating the number of hours per week spent studying by a student and his or her grade point average. In order to find if this correlation coefficient is statistically significant, you need to know the _____ .
a. means for both variables
b. standard deviation for both variables
c. number of pairs of scores on which robs was based
d. CPXY for this correlation
Question 2
The dilemma facing the experimenter is determining how large a difference between the
sample means is enough to decide that something other than _____ is at work in the
experiment.
a. the independent variable
b. a treatment effect
c. sampling error
d. systematic variation
Some mangrove islands in the Florida Keys, which number in the thousands, are convenient places to t
Part of the physical map of the E. coli genome, obtained by sequencing
Sample Student Externship Form
A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is:
Number 12
How mitosis maintains the chromosome number.