Some LEGO sets use characters trademarked (TM) by other companies (i.e. Star War

Question

Some LEGO sets use characters trademarked (TM) by other companies (i.e. Star Wars and Harry Potter). Does LEGO charge more for these trademarked sets? A researcher worked with matched pairs (TM and non-TM) with approximately the same number of pieces and looked at the price per piece for each set. (Price per piece is calculated by taking the cost of the set divided by the number of pieces). For convenience, let µTM=population mean price per piece for trademarked sets and µnon-TM=population mean price per piece for non-trademarked sets.

# of pieces TM Non TM

70 0.151 0.098
140 0.144 0.069
240 0.104 0.148
340 0.121 0.084
400 0.129 0.123
560 0.106 0.089
1290 0.101 0.094

What T test is used?

Explanation / Answer

In the given data number of pieces corresponding TM and Non TM is given, it means that TM and Non TM are obtained from the same number of pieces, so the given data suitable analyse by Matched paired-t test.

Answer: Matched paired t-test

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