A medical insurance company offers two prescription-drug insurance plans. With plan 1, James would pay the first $150 of his prescription costs and 50% of all costs after that. With plan 2, James would pay the first $280 of costs, but only 20% of the rest. For what amount of prescription costs will plan 2 save James money? (Assume that his prescription costs exceed $280.) mostly need help on how to do the problem

Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.