What is the value of the standard error of the mean (in dollars)? (Round your answer to one decimal place.)
a) $50.2
b) $45.7
c) $55.9
d) $60.4
What is the probability that the sample mean will be more than $55,551?
a) 0.25
b) 0.15
c) 0.05
d) 0.35