A house has a pyramid shaped roof. The owners need to replace the shingles on the roof due to hail damage. The contractor they hired charges $3,600 installation fee in addition to materials. The shingles the owners will chose cost $250 per bundle of shingles. A bundle is 100 square feet. How much would it cost the owner to replace the shingles on the roof?

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.