Question 10 4 pts Find the best predicted value of y given that x= 1. The given statistics are summarized from paired sample data: a) r=0.989, n=50, the equation of the regression line is y=3+4x, and the mean value of y's is 5. b) r=0_0121, n=50, the equation of the regression line is y=3+4x, and the mean value of y's is 5. Question 11 4 pts For each claim determine if we would use two-tailed test, left- tailed test or right-tailed test: a) The mean number of books read by a student during one year is 51 [Select] v b) The mean annual income of workers in the factory is greater than $500000 [Se'e] " c) The proportion of people with blue eyes is less or equal than 03 [Select] v d) The majority of college students have credit cards [ Select] v Question 12 4 pts 1) If we wish to have a probability of type I error equal 0.04, which level of significance should we choose for the hypothesis testing? 2) John will perform a hypothesis test at 0.05 signicance level. Tom will perform the same test at 0.01 signicance level. If null hypothesis is true, who has a greater probability of making a Type I error? If null hypothesis is true, who has a greater probability of making a Type II error? (please type the name of the right person as an answer)