Choose the best answer, and explain. If X is a random variable with a lognormal distribution, then _______
i. the mean of X is always greater than the median.
ii. the mean of X is always less than the median.
iii. the mean may be greater than, less than, or equal to the median, depending on the value of ?.
i. Since the lognormal population is skewed to the right, the mean will always be larger than the median. More precisely, the mean is 
, while the median is 
. Since 
, the mean is greater than the median.
You might also like to view...
Specifically describe how the skirt is welded to the head.
Refer to Drawing Numbers E492877 R0 and E482878 R0.
What battery is selected where frequent discharging is expected?
a. Lead Acid/Plante’ b. Lead Acid/Calcium c. Lead Acid/Calcium, Maintenance free Liquid Electrolyte d. Lead Acid/Antimony
For the AFD operating frequency range shown in Figure 4, the range of AFD output frequencies over which the ratio of volts to hertz remains constant is identified in the figure as _____.
a. A to C b. D c. A to D d. A to B
Which step should be performed LAST when diagnosing an engine performance problem?
A) Performing a thorough visual inspection B) Checking for any stored diagnostic trouble codes C) Checking for any technical bulletins D) Verify the repair