If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.
3
A. 
B. 
C. 
D. 
Answer: C
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Find all the roots of the complex number. Put answers in standard form.Fourth roots of -16
A. 
+ 
j, 
- 
j, - 
+ 
j, - 
- 
j
B. 2 + j, 2 - j, -2 + j, -2 - j
C. 1 + j, 1 - j, -1 + j, -1 - j
D. 8
+ 8
j, 8
- 8
j, -8
+ 8
j, -8
- 8
j
Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Which students in the Watson and Moritz (2000) study were at times indifferent about the sizes of samples used for statistical investigations?
a. Samplers with primitive random selection b. Samplers with preselection of results c. Samplers with random or distributed selection d. Equivocal samplers
Provide an appropriate response.A plane averaged 300 mph on a 600 mile trip and then returned over the same 600 miles at the rate of 400 mph. What was the plane's average speed for the entire trip? Give reasons for your answer.
What will be an ideal response?