A study was conducted to measure (1) the amount of cervical spine movement induced by
Chapter 7, Problem 7.1-13(choose chapter or problem)
A study was conducted to measure (1) the amount of cervical spine movement induced by different methods of gaining access to the mouth and nose to begin resuscitation of a football player who is wearing a helmet and (2) the time it takes to complete each method. One method involves using a manual screwdriver to remove the side clips holding the face mask in place and then flipping the mask up. Twelve measured times in seconds for the manual screwdriver are 33.8 31.6 28.5 29.9 29.8 26.0 35.7 27.2 29.1 32.1 26.1 24.1 Assume that these are independent observations of a normally distributed random variable that is N(, 2). (a) Find point estimates of and . (b) Find a 95% one-sided confidence interval for that provides an upper bound for . (c) Does the assumption of normality seem to be justified? Why?
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