Problem 2

The average mpg usage for a 2017 Toyota Prius for a sample of 21 tanks of gas was 45.4 with a standard deviation of 2.3. For a 2017 Ford Fusion, the average mpg usage for a sample of 21 tanks of gas was 43.8 with a standard deviation of 2.1. Assuming equal variances, at a = .01, is the true mean mpg lower for the Ford Fusion? (a-1) Choose the appropriate hypotheses. a. Ho: Hsex - Heard $ 0 VS. Hi: Usex - Usesd > 0. Reject Ho if teaks > 2.423 b. Ho: Hoax - Usesa 5 0 VS. H1: Usex - Usesa > 0. Reject Ho if twats - 2.423 b O c O d (a-2) Calculate the texts (Round your answer to 4 decimal places.) teala (a-3) Based on the teats determined, choose the correct decision. Reject the null hypothesis "Fail to reject the null hypothesis (a-4) Is the true mean mpg lower for the Ford Fusion? O Yes (b) Calculate the p-value using Excel. (Round your answer to 4 decimal places.) p-value