A researcher develops a new theory that predicts that vegetarians will have more

of a particular vitamin in their blood than non-vegetarians. An experiment is

conducted and vegetarians do have more of the vitamin, but the difference is not

significant. The probability value is 0.13. Should the experimenter's confidence

in the theory increase, decrease, or stay the same?

7. A researcher hypothesizes that the lowering in cholesterol associated with

weight loss is really due to exercise. To test this, the researcher carefully controls

for exercise while com- paring the cholesterol levels of a group of subjects who

lose weight by dieting with a control group that does not diet. The difference

between groups in cholesterol is not significant. Can the researcher claim that

weight loss has no effect?

8. A significance test is performed and p = .20. Why can't the experimenter claim

that the probability that the null hypothesis is true is .20?

9. For a drug to be approved by the FDA, the drug must be shown to be safe and

effective. If the drug is significantly more effective than a placebo, then the drug

is deemed effective. What do you know about the effectiveness of a drug once it

has been approved by the FDA (assuming that there has not been a Type I error)?

10. When is it valid to use a one-tailed test? What is the advantage of a one-tailed

test? Give an example of a null hypothesis that would be tested by a one-tailed

test

Oxygenation Px: Use of accessory muscles to breath Notify HCP if oxygen response is inadequate STAT Educate about effective coughing techniques Routine Notify HCP for worrisome changes in respiratory rate/depth/effort/position STAT Educate/encourage pursed lip breathing STAT Px: Cyanosis to lips Titrate oxygen STAT Determine patency of oxygen tubing STAT Ensure pulse ox is applied and level documented STAT Px: Inspiratory and expiatory wheezes Administer mucolytic STAT O Humidify oxygen Urgent Infection EHR: Sputum gram stain/culture not collected Collect sputum culture STAT O Hx: Green sputum Wash hands before and after contact with the patient STAT Provide waste bags for the disposal of tissues STATConsider the following 4 statements Stat 1 : Elements a and b of a POSET (S,