04 May A Pair Of Researchers Wants To See If Pet Owners Are Generally Happier Or Sadder Than …
A pair of researchers wants to see if pet owners are generally happier or sadder than individuals without pets. In other words, does having a pet affect an individual’s mood? The researchers can’t agree on the best method for answering the research question. The researchers split up and conduct two different experiments. Below are the two experiments: Method 1 The Dr. Johnson believes that the best way to answer the research question by getting two random samples of individuals. The first sample will consist of pet owners and the second sample will consist of non-pet owners. Both groups are given a mood inventory. The data are as follows: (1) Pet Owners, 10, 9, 11, 11, 9 Non Pet Owners, 15, 9, 10, 19, 15 1. Use Hypothesis testing to determine if there are any significant differences in mood among the pet owner and non-pet owners? Test at the .05 level of significance. a. Step 1: State Hypothesis b. Step 2: Set Criteria c. Step 3: Compute Sample Statistic d. Step 4: Make a decision i. Did you reject the null/fail to reject the null ii. State your conclusions Method 2 Dr. Cunningham feels that characteristics that affect pet ownership will also affect mood. She wants to conduct an experiment holding these characteristic constant. A group of individuals without pets are selected. The subjects are given a mood inventory and then are given a pet to take home. Six months later the subjects are asked to come back and given the mood inventory again. The data are as follows: Pet Owners: 10, 9, 11, 11, 9 Non Pet Owners: 15 ,9, 10 ,19, 15 2. Use Hypothesis testing to determine if there are any significant differences in mood among the pet owner and non-pet owners? Test at the .05 level of significance. a. Step 1: State Hypothesis b. Step 2: Set Criteria c. Step 3: Compute Sample Statistic d. Step 4: Make a decision i. Did you reject the null/fail to reject the null ii. State your conclusions
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