Question: Part A-Lecture Component (8 marks) A researcher is studying how the seriousness of local current issues described statistically in introductory videos impacts the perceived interest

Part A-Lecture Component

(8 marks) A researcher is studying how the seriousness of local current issues described statistically in introductory videos impacts the perceived interest expressed by students for learning Statistics at MacEwan.The researcher obtains a random sample of 1000 students and randomly assigns them to 4 groups. Students in group 1 saw a video that statistically described serious current local issues, students in group 2 saw a video that statistically described uplifting current local issues, students in group 3 saw a video that statistically described a mix of serious and uplifting current local issues, and students in group 4 did not view a video. Following this, students were asked whether they were interested in learning Statistics.

After completing her research, the researcher noted that 70% of the students in group 1 expressed interest in taking the course, 74% of the students in group 2 expressed interest in taking the course, 78% of the students in group 3 expressed interest in taking the course, and 66% of the students in group 4 expressed interest in taking the course. Based off this, the researcher stated that watching videos that statistically describe local current issues seems to positively impact the perceived level of interest in taking Statistics by MacEwan students, and that providing statistical description about a mix of serious and lighthearted local current issues seems to invoke the most interest.

Identify the sample and population of this study. (2 marks)
Is this study a designed experiment or an observational study? Explain why. (2 marks)
Is this study descriptive or inferential? Explain why. (2 marks)
Propose two different methods to randomly assign the 1000 students to each of the 4 groups. Hint: think of this as obtaining a simple random sample of 250 students from a collection of 1000 students, then taking a second random sample of 250 students from the remaining 750 students, and so on, in order to obtain 4 separate random samples, each of size 250. (2 marks)

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