Which of the following is the difference between anecdotal claims and frequency claims?
a) anecdotal claims involve a single variable, but frequency claims involve two variables.
b) anecdotal claims are not based on scientific studies, but frequency claims are.
c) anecdotal claims are less interesting than frequency claims.
d) anecdotal claims appear in newspapers, but frequency claims appear in journals.
e) none of the above are true.

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states