You are given an array a representing heights of students. all the students are asked to stand in rows. the students arrive by one, sequentially (as their heights appear in a). for the i-th student, if there is a row in which all the students are taller than a[i], the student will stand in one of such rows. if there is no such row, the student will create a new row. your task is to find the minimum number of rows created. test cases

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.