typical which a driver is busines d. worker spullu level at declareu Does the Gov. 5.57 Many states have to reduce the in the by certain drunk. There has been resistance to this change conducted to demonstrate groups who have argued that the current limit is adequate. A study was states. la level of 1%, the current limit in many the effect on reaction time time recorded in a standard dom sample 25 persons of legal driving had their reaction of test procedure before and after drinking a sufficient amount of alcohol to raise their blood alcohol to a level. The Before) in their reaction times in seconds was recorded as follows: .28 .28 .29 .01 .02 .04 .05 .07 .09 .11 .26 .27 .27 .29 .30 .31 .31 .32 .33 .35 .36 .38 .39 .39 .40 a. Graph the data and assess whether the population has a normal distribution.
b. Place a 99% confidence interval on both the mean and median difference in reaction times of drivers who have a blood-alcohol level of .1% .1% causes any increase in
c. Is there sufficient evidence that a blood-alcohol level of the mean reaction time?
d. Is there sufficient evidence that a blood-alcohol level of .1% causes any increase in the median reaction time? e. Which summary of reaction time differences seems more appropriate, the mean or median? Justify your answer