A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing and variable costs (such as printing). There are two production methods it could use. With one method, the one-
time fixed costs will total $18,523, and the variable costs will be $21.75 per book. With the other method, the one-time
fixed costs will total $64,780, and the variable costs will be $9 per book. For how many books produced will the costs from
the two methods be the same?
3968| books
Х
$
?

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.