I need help with this

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)