Question 12
The guest services staff at an amusement park surveys 50 randomly selected season pass holders and 50 randomly selected non-season
pass holders to gauge interest in a new attraction. The staff concludes that park visitors would be very interested in a new water ride next
season. Which statements about the sample are true? Select all that apply.
A) The inference is valid.
B) The sampling method is biased.
C) The sampling method is unbiased.
D) This scenario is a stratified random sample.
E) This scenario is a voluntary response sample.

Statements A) The inference is valid and C) The sampling method is unbiased are true in this scenario. The staff surveyed both season pass holders and non-season pass holders, representing different visitor groups, to gauge interest in the new attraction. Since the survey was conducted on a diverse sample, it can be considered unbiased and the conclusions drawn from it are valid.

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