To test the hypothesis that students who listen to classical music will recall m

Question

To test the hypothesis that students who listen to classical music will recall more words on a memory task than students who listen to country music, an experimental psychologist randomly assigned 20 students to either a classical music group or a country music group. The experimenter read a list of 10 words to members of both groups. Then, students listened to either2 minutes of a classical song or 2 minutes of a country song. Finally they wrote down as many words as they could remember from the list of 10 words. The data are as follows: Classical Music Country Music 1. State the hypothesis 2 Winy s andom sampling mporantin an experiment? 3. What is the independent variable in this study? 4. What is the dependent variable in this study? 5. Is the independent variable in this study discrete or continuous? Explain.

Explanation / Answer

For the analysis to find that the students recalls more words from the given two types of Musics.

1. Null Hypothesis: There is no significant mean diference between the two group.

Vs

Alternative Hypothesis: There is a significant mean diference between the two group.

2) The random sampling is important because it eliminate the error which occures due to bisedness.

If the sample is biased then there are more chancess that we draw false conclusion.

3) The words remember by the students by two types of music is independent of each other.

4) While the number of words remembered is depends on the types f music the listen.

5)The words remember by the students is a discrete random variable. Since it takes countable values like 1,2,3..etc.

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