The deli at the local grocery store sells chicken for $3.80 per pound, beef for $3.50 per pound, and salami for $2.90 per pound. Write an expression that shows how much it will cost to buy c pounds of​ chicken, b pounds of​ beef, and s pounds of salami.​ Then, find the cost for 1 pound of​ chicken, 1.8 pounds of​ beef, and 3.2 pounds of salami. The cost of 1 pound of​ chicken, 1.8 pounds of​ beef, and 3.2 pounds of salami is ​$_

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.