Which test would the nurse perform on a patient who reports impaired balance?
Added by Amparo R.
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Recent research has demonstrated that music-based physical training for elderly people can improve balance, walking efficiency, and reduce the risk of falls (Trombetti et al., 2011). As part of the training, participants walked in time to music and responded to changes in the music's rhythm during a 1-hour per week exercise program. After 6 months, participants in the training group (n = 12) increased their walking speed and their stride length compared to individuals in the control group (n = 12). A t-test was conducted to compare differences in scores between the categories and a value of -2.76 was obtained. A. State the null and the alternative hypothesis (using words and symbols) B. Set the decision criteria C. Use the t-value provided (you don't need to do calculations). D. Make the decision (fail to reject or reject the null hypothesis at either or both the .01 or .05 alpha level)
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researcher wanted to study the effects of a new exercise training intervention on balance. She wanted to know as a baseline what the average balance of her patients was relative to the general population. She used a standardized balance test which has a population mean of 10 sec and population standard deviation of 12 sec. 30 patients in her study were found to have an average of 15 sec on the balance test. Using an alpha level = 0.05 and a two-tailed test, which of the following statements is true? Test statistic = 2.28 and fail to reject the null hypothesis Test statistic = 2.28 and reject the null hypothesis Test statistic = -2.28 and reject the null hypothesis Test statistic = 2.19 and reject the null hypothesis
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