Identify the problem with the method used to obtain a random sample.Denis is interested in the opinions of students at his university regarding life after death. He obtains an alphabetical listing of names of all students at the university. He obtains a sample of 10 students by choosing every 1000th name from the list.
A. Choosing every 1000th name will lead to bias in the sample. Not all of students on the list have the same chance of being selected.
B. The sample is too small.
C. The sample is biased because the students on the list will not be representative of all students.
Answer: B
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = x2 and y = 3
A. 
= 0, 
= 5
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 0, 
= 
Simplify the exponential expression using the rules for exponents.
A. 
B. 
C. 
D. 
Solve the problem.The rate of return of certain investments increases as the risk factor of the investment increases. An investment with a risk factor of 2 has a rate of return of 5.0%. An investment with a risk factor of 14 has a rate of return of 15.0%. What is the average rate of return per unit of risk?
A. 0.69% per unit risk B. 1.20% per unit risk C. 0.83% per unit risk D. 1.44% per unit risk
The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
?
What will be an ideal response?