If we wish to determine whether there is evidence that the proportion of successes is higher in group 1 than in group 2, the appropriate test to use is the:

A) z test
B) test
C) t-test with 2 degrees of freedom
D) F-test with 2 degrees of freedom
E) all of these

When might the median be the more appropriate measure of central tendency over the mean?

Graph the solution to the inequality on the real number line. $x(x+3)(x-3)>0$

A)
B)
C)
D)
E) none of these

Using Solver,determine the new price of a single standard suite.

A) $85.00
B) $79.81
C) $90.00
D) $147.98

Find the multiplicative inverse of the complex number $5+6i$ .

A) $-\frac{5}{61}+\frac{6}{61}i$
B) $\frac{5}{61}+\frac{6}{61}i$
C) $-\frac{5}{61}-\frac{6}{61}i$
D) $\frac{5}{61}-\frac{6}{61}i$
E) $5+6i$