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1. The One-Sample T-Test Procedure (Small N). Test the difference between a sample mean and a known or hypothesized value. (3 points) Problem: Tik
1. The One-Sample T-Test Procedure (Small N). Test the difference between a sample mean and a known or hypothesized value. (3 points) Problem: Tik Tok executives claim that users spend 30 minutes (or more) per day watching videos on the app. They use this information to sell sponsored content to potential advertisers. Instagram executives wants to test this claim, trying to prove that the average time spent on the app is less than 30 minutes per day. A random sample of 20 users' daily watch times is collected: Xi = 39, 35, 37, 28, 40, 25, 27, 24, 42, 45, 20, 38, 39, 25, 42, 26, 48, 51, 48, 41 Does Instagram have evidence to suggest that Tik Tok's claim of 30 minutes of daily video views is false? Instructions: -- Enter the data into SPSS manually (simply enter the data in a column labeled "minutes") -- Run a One-Sample T-Test Analyze Compare Means One-Sample T-Test Test Variable: "minutes" Test Value = 30 o Step 1: Assumptions. (.5 points) List 3 conditions these data must satisfy to conduct a One-Sample T-Test (Small N). Step 2: Hypothesis (.5 points) State the null hypothesis (H) and the alternative hypothesis (H). H: Step 3: Define the Test Statistic (t-critical, one tail test) (.5 points) Step 4: Compute the Test Statistic (T-obtained) (.5 points) Report the SPSS output below. Step 5: Conclusion (1 point) From these results, can you conclude that Tik Tok's claim that users watch at least 30 minutes of videos daily is false? Can you reject the null hypothesis?
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