The number of seconds XX after the minute that class ends is uniformly distributed between 0 and 60. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ U(,)  then the sampling distribution is Suppose that 40 classes are clocked.  What is the distribution of ¯xx¯ for this group of classes? ¯xx¯ ~ N(,) What is the probability that the average of 40 classes will end with the second hand between 28 and 33 seconds?

Suppose that the speed at which cars go on the freeway is normally distributed with mean 68 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible.If one car is randomly chosen, find the probability that it is traveling more than 65 mph. If one of the cars is randomly chosen, find the probability that it is traveling between 71 and 74 mph. 63% of all cars travel at least how fast on the freeway?         mph.

The amount of syrup that people put on their pancakes is normally distributed with mean 65 mL and standard deviation 13 mL. Suppose that 16 randomly selected people are observed pouring syrup on their pancakes. Round all answers to 4 decimal places where possible. What is the distribution of ¯xx¯? ¯xx¯ ~ N (______, ________) If a single randomly selected individual is observed, find the probability that this person consumes is between 67.2 mL and 68.8 mL. _________ For the group of 16 pancake eaters, find the probability that the average amount of syrup is between 67.2 mL and 68.8 mL. _________ For part d), is the assumption that the distribution is normal necessary? No or Yes

The number of seconds XX after the minute that class ends is uniformly distributed between 0 and 60. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ U(,)  then the sampling distribution is Suppose that 35 classes are clocked.  What is the distribution of ¯xx¯ for this group of classes? ¯xx¯ ~ N(,) What is the probability that the average of 35 classes will end with the second hand between 21 and 30 seconds?

The number of hours in a month a sample of 12 people chosen at random from a normal population work is as follows: 55,55,54,56,56,58,60,62,61,59,59,60. Can we conclude that the mean of the sample differs significantly from the assumed population average of 56 hours? Given that t11,0.05  2.201.

The number of seconds XX after the minute that class ends is uniformly distributed between 0 and 60. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ U(,)  then the sampling distribution is Suppose that 40 classes are clocked.  What is the distribution of ¯xx¯ for this group of classes? ¯xx¯ ~ N(,) What is the probability that the average of 40 classes will end with the second hand between 28 and 34 seconds?