Mr. Perkins wants to compare the number of golf players on his course on a weekday versus a weekend. He records the number of golfers every hour on a randomly chosen weekday, and again on a randomly chosen weekend.

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.