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Exercise 7 Interpreting Line Graphs
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Exercise 7 Interpreting Line Graphs
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Exercise 7: Interpreting Line Graphs1. What is the focus of the example Figure 7-1 in the section introducing the statistical
technique of this exercise?
The focus of the example Figure 7-1 is a comparison of weight loss over 4 weeks
between a group consuming a low carbohydrate diet and another group
consuming a standard diet.
2. In Figure 2 of the Azzolin et al. (2013, p. 242) study, did the nursing outcome
activity tolerance change over the 6 months of home visits (HVs) and telephone calls?
Provide a rationale for your answer.
Yes, the mean increased from 3.4 on HV1 to 4.2 at HV4.
3. State the null hypothesis for the nursing outcome activity
tolerance.
There is no change in the nursing outcome activity tolerance.
4. Was there a significant difference in activity tolerance from the first home visit (HV1) to
the fourth home visit (HV4)? Was the null hypothesis accepted or rejected? Provide a
rationale for your answer.
Yes, the activity tolerance increased significantly from HV1 to HV4.
The null hypothesis is rejected because the p values are less than alpha which is set at
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