Question

1.) You want to know whether doing 5 minutes of relaxation exercises causes students to perform better on exams. You randomly select a student from this PSYC 9 class and ask them to do 5 minutes of relaxation before the next exam and to tell you their score after they take it.

Circle the correct one: One-tailed test or Two-tailed test

What is Population 1?

What is Population 2?
What is the Research Hypothesis? Make sure to describe in words and mathematically What is the Null Hypothesis: Make sure to describe in words and mathematically

2.) A study examines how well a new drug treatment works to improve schizophrenia symptoms. One hundred patients with schizophrenia are randomly assigned to either a new drug or a placebo control group for an 8 week time period (50 in each group). A social worker assesses the number of symptoms during this time period. Is there a difference between the new drug treatment compared to the placebo in regard to how well it treats schizophrenia symptoms?

Circle the correct one: One-tailed test or Two-tailed test

What is Population 1?

What is Population 2?
What is the Research Hypothesis? Make sure to describe in words and mathematically

What is the Null Hypothesis: Make sure to describe in words and mathematically

Answer 1

1)

a) one tailed test because claim is directional

b) population 1 is all the students from PSYC 9 class who give exam without doing  5 minutes of relaxation exercises

c) population 2 is all the students from PSYC 9 class who give exam after doing  5 minutes of relaxation exercises

d)

research hypothesis is that doing 5 minutes of relaxation exercises causes students to perform better on exams

Ha: µafter > µbefore

e) null hypothesis is that doing 5 minutes of relaxation exercises do not cause students to perform better on exams

Ho: µafter = µ before