[Study A]. An expert on the fashion industry gathered information to compare the

Question

[Study A]. An expert on the fashion industry gathered information to compare the amount earned per month by nurses in Texas with those of Georgia. The mean amount earned per month of the former models is $4,387, and that of the latter models is $3,858. [Study B]. A recent article in The Wall Street Journal compared the cost of adopting children from China with that of Russia. For a sample of 16 adoptions from China the mean cost was $ 11,045. For a sample of 16 adoptions from Russia the mean cost was $ 12,840. An independent sample design is used in study A but not study B study B but not study A both study A and study B neither study A nor study B

Explanation / Answer

In Study A, there are 2 different population of nurses- One from Texas and one from Georgia. Hence the samples are independent.

In Study B, again we have children being adopted in 2 different countries, so again thee children being adopted in china are not the same children being adopted in Russia. So these are independent samples.

An independent sample design is used in both study A and study B.

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