1.

IF the bread is delicious

AND the price is expensive

AND the shop is big

THEN action is buy the bread {cf 0.5}

and given the current certainty factor of the evidences are as follows:

cf(bread is delicious) = 0.6, cf(price is expensive) = 0.5, cf(shop is big) = 0.4

Find the cf for action is buy the bread

2.Rule 1 : IF John is fast

THEN John can win the run {cf 0.6}

Rule 2 : IF John is slow

THEN John can win the run {cf 0.3}

and given the current certainty factor of the evidences are as follows:

cf(John is fast) = -0.7, cf(John is slow) = -0.4. Find the cf for John can win the run