Find the mean of the data set 31,31,22,28,23?

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?

The reflexive property of congruence lets you say that ∠pqr ≅

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1