Ms. Adams wrote a test. Part A had true/false questions, each worth 3 points. Part B had multiple choice questions, each worth 7 points. She made the number of points for Part A equal the number of points for Part B. It was the least number of points for which this was possible. Answer the following questions.

How many questions did Part A have?

How many questions did Part B have?

How many points was each part worth?

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.