Ahorse is tied to a 20ft long rope. the horse wants some oaks from an oak tree. the oak tree is 30ft away. the horse gets the oaks easily. why is this?

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.

Match the one-to-one functions with the graphs of their inverse functions.

What is the surface area of the sphere?