The distinguishing feature of probability samples is that
a. they involve personal judgment somewhere in the selection of sample elements.
b. each population element has an equal chance of being included in the sample.
c. each population element has an equal chance of being included in the sample and every combination of npopulation elements is a sample possibility.
d. each population element has a known chance of being included in the sample.
e. they will always be more representative of the population than nonprobability samples.
Question 2
Hardware stores now advertise to women and body care products are aimed at men. This is an example of how products
a. have become more sex-typed over time.
b. are mostly strictly sex-typed.
c. are almost never sex-typed.
d. have become less sex-typed.
e. are sex typed, but only in the durable product category.
Commensalisms that involve cheating.
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