The owner of Kat Motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results: 1 1 2. 3 4 5 6 Observation Time (secs) 2 87 99 90 81 93 90 How many observations should be made if she wants to be 95.44 percent confident that the maximum error in the observed time is 2 seconds? Assume that the standard deviation of the task time is 6 seconds