Identify the type of sampling described by the proposal.A market researcher randomly selects 500 homeowners under 40 years of age and 200 homeowners over 40 years of age.
A. stratified sample
B. cluster sample
C. convenience sample
D. simple random sample
E. systematic sample
Answer: A
You might also like to view...
Evaluate the function for the given values of a and b. Then use the intermediate value theorem to determine which of the statements below is true.a = -2 and b = -1f(x) = 6x4 + 2x3 - 2x - 7
A. f(-2 ) and f(-1) have opposite signs, therefore f does not have a real zero between -2 and -1. B. f(-2 ) and f(-1) have opposite signs, therefore f has a real zero between -2 and -1. C. f(-2 ) and f(-1) have the same sign, therefore the intermediate value theorem cannot be used to determine whether f has a real zero between -2 and -1. D. f(-2 ) and f(-1) have the same sign, therefore f does not have a real zero between -2 and -1.
Write a quadratic equation having the given solutions.10, 5
A. x2 + 50x + 15 = 0 B. x2 - 15x + 50 = 0 C. x2 + 15x + 50 = 0 D. x2 - 50x + 15 = 0
Find all cube roots of the complex number. Leave answers in trigonometric form.-6
- 6i
A. 
cis 70°, 
cis 190°, 
cis 310°
B. 
cis 70°, 
cis 190°, 
cis 310°
C. 
cis 70°, 
cis 190°, 
cis 310°
D. 
cis 80°, 
cis 200°, 
cis 320°
Classify the triangle as equilateral, isosceles, or scalene. Also, classify the triangle as acute, right, or obtuse.
A. equilateral; obtuse B. equilateral; acute C. scalene; acute D. isosceles; obtuse