The function f(x)=x^2 is transformed to f(x)= 0.4(x+1)^2. Which statement describes the effect(s) of the transformation on the graph of the original function? A. The parabola is wider and shifted 1 unit to the left.
B. The parabola is wider and shifted 1 unit to the right.
C. The parabola is narrower and shifted 1 unit to the left.
D. The parabola is narrower and shifted 1 unit to the right.

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.