Provide an appropriate response.Traditionally in hypothesis testing the null hypothesis represents the "status quo" which will be overturned only if there is evidence against it. Which of the statements below might represent a null hypothesis?
A. The mean temperature this decade is higher than the mean temperature over the past century.
B. The defendant is guilty.
C. The treatment has no effect.
D. The teaching method raises SAT scores.
Answer: C
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Solve the problem.The grade resistance F of a car traveling up or down a hill is modeled by the equation F = W sin ?, where W is the weight of the car and ? is the angle of the hill's grade (? > 0 for uphill travel, ? < 0 for downhill travel). What is the grade resistance (to the nearest pound) of a 2100-lb car traveling downhill on a 5° grade (? = -5°)?
A. 183 lb B. -2105 lb C. 2105 lb D. -183 lb
Solve the equation.
+ 
= -1
A. - 
B. No solution
C. 5
D. 0
Find the degree of the polynomial.2x6 + 4x4 + 2x3 - 1
A. 3 B. 5 C. 4 D. 6
Determine which inequality matches the graph.
A. y ? 2x - 3 B. y ? 2x - 3 C. y ? -2x - 3 D. y ? -2x - 3