Which statement is true?

Multiple Choice

The expected rate of return on any portfolio must be positive.

The arithmetic average of the betas for each security held in a portfolio must equal 1.0.

The beta of any portfolio must be 1.0.

The weights of the securities held in any portfolio must equal 1.0.

The standard deviation of any portfolio must equal 1.0.

It says factor each expression 49x-28?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

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.