Which statement is true about expert systems?
a. expert systems can produce results from sources beyond the knowledge base
b. expert systems can find patterns in data and generalize rules for other data
c . expert systems can infer the knowledge based on cause and effect
d . expert systems retain their knowledge base permanently

Rename mixed numbers before you can subtract are what

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

Tan198=asin164=? how to solve this? ?