A hypothesis test is to be performed. State the null and alternative hypotheses.The governor of a state claims that since his tax cuts have taken effect, the unemployment rate has dropped. The unemployment rate in the state had been 6.3% prior to the tax cuts.
A. Null hypothesis: unemployment rate < 6.3%
Alternative hypothesis: unemployment rate = 6.3%
B. Null hypothesis: unemployment rate > 6.3%
Alternative hypothesis: unemployment rate < 6.3%
C. Null hypothesis: unemployment rate = 6.3%
Alternative hypothesis: unemployment rate ? 6.3%
D. Null hypothesis: unemployment rate = 6.3%
Alternative hypothesis: unemployment rate < 6.3%
Answer: D
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Add or subtract. Simplify your answer to lowest terms.
+ 
A. 
B. 4
C. 
D. 
Multiply. Assume that all variables represent nonnegative real numbers.(
- 2)(
- 4)
A. 
- 6
+ 8
B. 
+ 8
C. -5
+ 8
D. 
- 4
- 2
+ 8
Solve the problem.A reservation clerk worked 19.8 hours one day. She spent twice as much time entering new reservations as she did verifying old ones and one and a half as much time calling to confirm reservations as verifying old ones. How much time did she spend entering new reservations?
A. 17.6 hours B. 4.4 hours C. 8.8 hours D. 6.6 hours
Simplify the expression.
2/3
A. 
B. 
C. - 
D. 