Which of the following statements about electric charge, electric fields, and electric forces is/are true? The strength of the electric force drops off as the distance between the charges increases.  An electric charge creates an “electric field” of varying strength everywhere around it. A “test charge” placed near an existing electric charge will experience an electrostatic force.

The actual mean of a portfolio of two stocks is ________; the actual portfolio variance of two stocks is __________.   Note:  In the possible answers, the wording PRIOR to the semi-colon is what goes in the first blank in the question.  The wording AFTER the semi-colon is what goes in the second blank in the question. 

The only answer here can be true.  If you do not understand this question and can’t answer true, please stop and ask Dr G or the LA to help you.  I understand that I should “show my work” for anything that requires a calculation.    I also understand that I am NOT to use formulatext on the test as this is not “showing your work.” 

Place the steps of the Gram stain in the correct order:1-Alohol-acetone ; 2-Crystal violet ; 3-Safranin ; 4-Iodine 

A sequence of DNA is AGCTGGATC.  What is its complementary strand?

According to Cohen’s guidelines, what value of d represents a large effect size?Enter your answer as a decimal such as 0.5. HINT: Cohen’s d measures how strong the difference is between two group averages.

Which of the following best describes the null hypothesis (H₀)?

Match each term with the example or definition that best describes it. These are all related to comparing two populations.

What is the main purpose of hypothesis testing in statistics?

Which of the following is always true about the null and alternative hypotheses?