The U

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 The U.S. national average door-to-doctor wait time for patients to see a doctor is 21.3 minutes. Suppose that such wait times are normally distributed with a standard deviation of 6.7 minutes.

Denote the random variable in this problem by X. What is X?

Select one:

a. between 6.7 and 21.3 minutes

b. 6.7 minutes

c. 21.3 minutes

d. Door-to-doctor wait times

Unfortunately, some patients will have to wait much longer than the mean to see the doctor.
In the current problem, 3% of patients have to wait at least --------- minutes to see a doctor. Your answer must be rounded to 1 decimal point and please do not add the word "minutes". If you add "minutes", it will be graded wrong even if it may be correct.