An investigator is studying the effect of a new growth hormone injection on height of boys with short stature. He has the boys come into the clinic every 6 months to have their height measured precisely on a calibrated stadiometer. Height is an example of what type of variable?
Read DetailsAn investigator’s research hypothesis is: There will be a difference in work satisfaction between nurses who have a fixed schedule and nurses who have a rotating shift schedule. Using the standard level of significance (0.05), which conclusion would you make from the following SPSS output?
Read DetailsThe following table was reported to describe the sample in a study examining the relationship between coffee and tea consumption and mortality (Gardener, Rundek, Wright, Elkind, Sacc, 2013). Based on the information provided in the table, the “Race/ethnicity” data were collected at which level of measurement?
Read DetailsAn investigator enrolls men who were college athletes and are now 40-59 years old into a study to examine the effectiveness in vitamins intended to decrease muscle loss. The men will be divided into three groups – Group 1 will take Vitamin A, Group 2 will take Vitamin B, and Group 3 will not take any vitamins. What is the independent variable?
Read Detailsa. Provide your own example of a nondirectional research hypothesis (not an example from the lecture or readings). b. What is the corresponding null hypothesis for your example in part a? c. What is the independent variable in your example in part a? d. What is the dependent variable in your example in part a?
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