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6-7. The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to .146. The means of 39 samples of n = 14 are Mean Sample Mean Sample 1 3.86 11 Mean Sample 3.88 21 Sample Mean 31 3.88 3.84 2 3.90 12 3.86 3.82 32 3.76 3 3.83 13 3.88 23 3.89 33 3.83 4 3.81 14 3.81 24 3.86 34 3.77 5 3.84 15 3.83 3.88 35 3.86 6 3.83 16 3.86 3.90 36 3.80 7 3.87 17 3.82 3.81 37 3.84 8 3.88 N 000 3.86 3.86 38 3.79 9 3.84 3.84 3.98 39 3.85 10 3.80 20 3.87 30 3.96 4