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Zbe paid $18.60 in sales tax and tips for her dinner. The sales tax rate is 11. and she tipped 207. (The
sles tax does not apply to the top and the tip is based on the price of the dinner before sales tax)
What was the price of Zoe's cinner, before sales tax and tip?

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.