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trinityrae4657
02.12.2019 •
Mathematics
"adults who stutter; responses to cognitive stress," published in the journal of speech and hearing research in 1994, reported speech rate, in words per minute, for nine stutterers under conditions of stress. if a comparison is to be made between these and speech rates under conditions of stress for nine non-stutterers
(a) if a comparison is to be made between these and speech rates under conditions of stress for 9 non-stutterers, what type of design would this be? several-samplepairedtwo-sample(b) how would the data best be summarized? by reporting means and standard deviations of speech rates under stress of stutterers and non-stutterers,respectivelyby reporting the mean and standard deviation of the differences between speech rates, pairing up each stutterer with a non-stutterer(c) how would the data best be displayed? with a histogramwith side-by-side boxplots(d) in order to draw conclusions about speech rates for all stutterers under stress conditions compared to non-stutterers under stress conditions, how should we perform inference? about µ1 - µ2 based on x1 - x2about µd based on xd(e) which form of inference should be performed first? a hypothesis test to determine that stutterers in general are different from non-stutterers in terms of their speech ratesa confidence interval for population difference in mean speech rates (stutterers versus non-stutterers)
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