Multiply $(-4-\sqrt{-4})$ by its complex conjugate and simplify.

A) 20
B) $32+32i$
C) $0$
D) 32
E) $8+4i$

What single rate of discount would be equivalent to a series of 25%/18%/10%?

A) 55.4%
B) 53.0%
C) 41.7%
D) 34.3%
E) 44.7%

For larger sample sizes, the level of confidence has less of an impact on the width of the confidence interval than for smaller sample sizes. This would indicate that there is a trade-off between ______.

A) probability and precision
B) confidence levels and confidence intervals
C) sample sizes
D) upper and lower limits

Express the following as an equivalent ratio whose smallest term is 1: 1.41: 8.22

For a sample of 100 students analyzing 4 predictor variables, what is the degrees of freedom for the denominator of the F-ratio equation?

A) 3
B) 4
C) 95
D) 98

A customer bought 394 grams of chilies at the store. How many kilograms was that? Round to three places.​

A soup recipe calls for 3.5 cups of chicken stock. How many liters is that? Round to two places.​