day, students were offered a choice of math problems with differing levels of di

Question

day, students were offered a choice of math problems with differing levels of difficulty. Following sleep loss, students tended to choose less challenging problen 10.30 Null and research hypotheses: Using the research studies described in the previous exercise, create null hypotheses and research hypotheses appropriate for the chosen statistical test: a. Taylor and Ste-Marie (2001) studied eating dis- orders in 41 Canadian female figure skaters. They compared the figure skaters' data on the Eating Disorder Inventory to the means of known popu- lations, including women with eating disorders. On average, the figure skaters were more similar to the population of women with eating disorders than to those without eating disorders. b. In an article titled "A Fair and Balanced Look at the News: What Affects Memory for Controversial Arguments," Wiley (2005) found that people with a high level of previous knowledge about a given controversial topic (e.g., abortion, military inter- vention) had better average recall for arguments on both sides of that issue than did those with lower levels of knowledge. c. Engle-Friedman and colleagues (2003) studied the effects of sleep deprivation. Fifty students were assigned to one night of sleep loss (students were required to call the laboratory every half-hour all and then one night of no sleep loss (normal sleep).The next day, students were offered a choice 10.33

Explanation / Answer

The null and alternate hypothesis in each case is as mentioned below: -

a)

H0: Figure skaters eating disorder is similar to women with eating disorders

H1: Figure skaters eating disorder is not similar to women with eating disorders

b)

H0: People with high level of previous knowledge about a given controversial topic had better average recall for arguments on both sides of that than did those with lower levels of knowledge

H1: People with high level of previous knowledge about a given controversial topic did not have better average recall for arguments on both sides of that than did those with lower levels of knowledge

c)

H0: Sleep loss does not have any effect on sleep deprivation

H1: Sleep loss had effect on sleep deprivation

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