Participants in a random sample of 5 professional rugby players are placed on a

Question

Participants in a random sample of 5 professional rugby players are placed on a special diet for one month. The weights before and after one month on the diet are as follow: Before: 187 205 165 193 199 After: 175 193 167 190 197 We want to determine if the special diet helps reduce the weight of the rugby players. Assume the weight of the professional rugby players is approximately normally distributed. This is a hypothesis test of Two independent population means, population standard deviations known. Two independent population means, population standard deviations unknown. Paired or matched samples. Two population proportions.

Explanation / Answer

Here the study is conducted on same group of data. Before and after study is conducted which is example of paired samples t test.

Thus,

Answer is Option C.

Paired or matched samples.

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