To travel the erie canal, a boat must go through locks that raise or lower the boat. traveling east, a boat would have to be lowered 12 feet at amsterdam, 11 feet at tribes hill, and 8 feet at randall. by how much does the elevation of the boat change between amsterdam and randell?
is it adding integer, multiplying, and dividing

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.