The number of seconds X after the minute that class ends is uniformly distributed between 0 and 60. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - U( then the sampling distribution is b. Suppose that 40 classes are clocked. What is the distribution of a for this group of classes? ☎ ~ N( c. What is the probability that the average of 40 classes will end with the second hand between 23 and 29 seconds?

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