Mrs. Fisher is remodeling her house and needs to buy wallpaper border for her living room. She used her tape measure and found that the wall is 197 inches wide. When she arrived at the store she discovered that the border is only sold in yard-long increments. How many yards of border should Mrs. Fisher purchase ? How many yards of border does Mrs. Fisher actually need? Round your answer to the nearest thousandth.

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.