a) Eight readings are shown below in ascending order (smallest to largest). -9, 0, 1, x,...

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a) Eight readings are shown below in ascending order (smallest to largest). -9, 0, 1, x, 7, 10, 12, 13. The mean and the median are the same. Find the value of x. b) 50 people were asked to record how long they had to wait at a supermarket check-out before being served. The results are shown in the table below. Time, t, minutes 0 a) Eight readings are shown below in ascending order (smallest to largest). -9, 0, 1, x, 7, 10, 12, 13. The mean and the median are the same. Find the value of x. b) 50 people were asked to record how long they had to wait at a supermarket check-out before being served. The results are shown in the table below. Time, t, minutes 0