The following map shows the time it takes to drive between four cities in Texas. Jacob has to drive from San Antonio to Houston, and then from Houston to Dallas. How many hours will it take him? The picture is supposed to be right here

Answers:
7 2/15 hours
7 5/12 hours
4 7/12 hours
7 hours

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.