question 1: assume that both populations..? question 2: a credit score is used by...?

ssume that both populations are normally distributed. Sample 1 Sample 2 a) Test whether u, > 12 at the a= 0 10 level of significance for the given sample data: 18 13 b) Construct a 90% confidence interval about " - H2 45.4 37.3 9.6 Click the icon to view the Student t-distribution table. ) Perform a hypothesis test. Determine the null and alternative hypotheses O A. He H1 > H2. H1. H1 H2 O B. Ho- H1 H2 O C. Ho: H1 = H2. H1 41> H2 O D. Ho: H1 = 12, H1 H1