Homework answers / question archive / 1)A) Can you increase the level of measurement for any of them? B) If you are looking at what outcomes are associated with lead exposure in children, what is your independent variable? C) Why might this independent variable be difficult to measure? 2)A) You have been asked to follow up in your community and determine what outcomes are associated with lead exposure in children

1)A) Can you increase the level of measurement for any of them? B) If you are looking at what outcomes are associated with lead exposure in children, what is your independent variable? C) Why might this independent variable be difficult to measure? 2)A) You have been asked to follow up in your community and determine what outcomes are associated with lead exposure in children

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1)A) Can you increase the level of measurement for any of them? B) If you are looking at what outcomes are associated with lead exposure in children, what is your independent variable? C) Why might this independent variable be difficult to measure?

2)A) You have been asked to follow up in your community and determine what outcomes are associated with lead exposure in children. List three dependent variables for your study and how you will measure them. B) What level of measurement are your dependent variables? Are they continuous or categorical?

3)A) You decide to measure postoperative hematocrit by serum levels. Is this a quantitative or qualitative measurement? B) You discover that all but those with the lowest hematocrits had higher levels of depression after their surgery and transfusion. Why might the group that had the most critical need for the transfusions not have the subsequent depression associated with this result in the rest of your sample?

4) If a researcher is examining how exposure to cigarette ads affects smoking behavior, the cigarette ads are what type of variable?

a) qualitative

b) quantitative

c) dependent

d) independent

5) Ball bearings are manufactured with a mean diameter of 6 millimeters (mm). Because of the inherent manufacturing process variability, the lots of bearings are approximately normally distributed with a standard deviation of 0.03 mm.
Using Scenario 6-5 and the result of the previous question, if 40,000 ball bearings were to be manufactured, how many would the manager have to discard?

6) Consumer preferences have been observed in a situation for which the standard error is known. Find the critical t value to use for each of the following confidence interval calculations