I need C and D:

Suppose that the duration of a particular type of criminal trial is known to be normally distributed with a mean of25daysand a standard deviation of6days.

• Part (a)
• In words, define the random variableX.
• the mean time of all trials
• the number of trials that last 25 days
• the length, in hours, of a criminal trial
• the length, in days, of a criminal trial
• Correct! The length, in days, of a criminal trial is the variable of interest.
• Part (b)
• Give the distribution ofX.
• X~
• ,
• Part (c)
• If one of the trials is randomly chosen, find the probability that it lasted more than28days.(Round your answer to four decimal places.)
• Sketch the graph.
• Write the probability statement.
• Px>28
• The random variable is defined as capital X.
• Part (d)
• 72%of all trials of this type are completed within how many days? (Round your answer to two decimal places.)
• days