A patient with erectile dysfunction (ED) takes sublingual nitroglycerin for angina. Which statement indicates need for further teaching about sildenafil?

  Which of the following best describes a representative sample?  

  A psychologist is testing whether sleep deprivation affects memory recall. If they hypothesize that sleep deprivation either increases or decreases recall ability, what type of test should they use?  

  Why should researchers report effect sizes in their write-ups of statistical tests?  

  Shaan is planning on going to a nice dinner with some friends to celebrate a recent accomplishment. He wants to know how much to expect to spend, so he tells his friends what he spends on average when going out to dinner alone (M: 20, SD: 5). Based on that information, they tell him that this dinner will probably have a z score of 1.5. What does that tell him about how much he is going to spend on dinner?  

Scenario: High-dose pantoprazole: 80 mg IV bolus, then 8 mg/hr infusion. Your bag is 80 mg in 100 mL. Question: What pump rate (mL/hr) gives 8 mg/hr?

  What does an effect size measure in psychological research?  

  Which of the following scenarios would best justify using a one-tailed test?  

  A pharmaceutical company tests whether a new drug is more effective than an existing one. They obtain a p value of .20. What does this indicate?  

  If a researcher wants to convey the central tendency of their data using a graph or visual, what type of statistics are they using?