A study was conducted to examine the effect of yoga on general health in older women.

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A study was conducted to examine the effect of yoga on general health in older women. 87 participants were randomly allocated to a group that included twice-weekly yoga sessions and 62 were allocated to a wait-list control group. At the end of the primary intervention period, participants were asked to rate their general health, with a value of 0 indicating “very poor health” and a value of 10 indicating “excellent health”.

The data are saved in yoga.csv with the following variables: ID general_health yoga: 0=waitlist control, 1=yoga intervention Analyse these data to assess whether the participants' general health differed between the yoga intervention and waitlist control group. a) Present these data graphically using an appropriate figure b) State the null and alternative hypothesis for this study. c) Use Stata to conduct a test to test your null hypothesis. Copy and paste the output here. Why is this test appropriate? d) Summarise your findings in a brief conclusion.

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