Identify the problem with the method used to obtain a random sample.April Summer is the cable TV coordinator for her town. She is planning to research the opinions of adults in the town regarding a proposed change in regulation of cable TV companies. She obtains a sample of 60 adults by choosing every 1000th name from the telephone directory.
A. Not all names listed in the telephone directory have an equal chance of being selected. April should use a random number generator to choose the names from the phone book instead of choosing every 1000th name.
B. The sample is biased as only those adults with a phone whose number is listed in the directory have a chance of being selected.
C. The sample is biased as April is not objective. Someone other than April should obtain the sample.
Answer: B
You might also like to view...
Find the simple interest. The rate is an annual rate unless otherwise noted. Assume 365 days in a year and 30 days per month. Round to the nearest cent.$250 at 3% for 12 months
A. $90.00 B. $0.63 C. $7.50 D. $750.00
Determine whether the vectors and
are equivalent.A(-6, -6), B(3, -9), C(9, 7), and D(6, 4)
A. Not equivalent B. Equivalent
Solve the problem.If f(x) = 7x + 6 and g(x) = 7x2 - 3x + 5, find (fg)(x) and (fg)(0).
A. 49x3 - 21x2 + 17x + 30; 30 B. 49x3 + 21x2 + 17x + 30; 30 C. 49x3 + 21x2 + 17x; 0 D. 49x2 - 21x + 41; 41
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = x3
A.
B.
C.
D.