Answer each part for the following context-free grammar g. r → xrx | s s → atb | bta t → xtx | x | ε x → a | b a. what are the variables of g? b. what are the terminals of g? c. which is the start variable of g? d. give three strings in l(g). e. give three strings not in l(g). f. true or false: t ⇒ aba. g. true or false: t ∗ ⇒ aba. h. true or false: t ⇒ t.

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?