Which interval accounts for the lowest percentage of response times?
The graph below displays a fire department's response
time, which measures the time from when the alarm is
sounded at the firehouse to the time the first fire engine
leaves the station.
BERE
Fire Department Response Times
O 20-30 seconds
O 30-40 seconds
70-80 seconds
080-90 seconds
0.4
0.3
Relative Frequency
0.2
0.1
10 20 30 40
50 60
70
80 90

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average