Question

You are trying to determine the proportion of all cars produced today that have defective transmissions. For each four-door car produced today, you will flip a coin; if it comes up heads, you will result in a test of the transmission.

Is this sampling plan biased? If so, which sampling bias is exhibited?

a) The sampling plan is not biased.

b) Response bias

c) Selection bias

d) Publication bias

Answer 1

option A is correct because there is no biasing in the sampling as the sampling is based on the fair coin which has equal probability of heads and tails.

option B is incorrect because researcher didnt asked anyone for response, so there is no response bias

option C is incorrect because researcher didnt selected any car by biasing, but all cars are selected using random sampling

option D is incorrect because there is no academic research included in this case.