A scientist has come up a new fertilizer for roses. She feels that with the use of this fertilizers, the average blooming time span for a rose will be at least 55 days? You don't agree with the scientist. Which of the following would be the alternative hypothesis to test your belief? Ha: p 65 Ha: y 2 56A teacher wants to track the number of books students have read each week for the past 20 weeks. Which of the following graphs might be most effective to use? Pareto chart Pie chart Time series graph Scatter plot