A university professor wanted to know if the attitudes towards statistics changed during the course of the semester. She took a simple random sample of students and gave them a test at the beginning of the term to assess their feelings toward statistics. When the semester was finished, she administered another test to the same group of students and wanted to see if there was a difference between the average attitude toward statistics. Inference for these data will be based on

A) Two dependent samples

Explanation:

According to a different source, these are the options that come with this question:

A) Two dependent samples

B) Two independent samples

Inference for these data will be based on the use of two dependent samples. Dependent samples are those in which each score in one sample is paired with a score in the other sample. This means that the samples are related to each other, or depend on each other. In this case, the sample taken at the beginning of the term is dependent on the sample tested at the end of the term, as the professor is testing the same group of students.

b) the planets year length would be longer

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