A survey has found that the American family generates an average of 22.2 pounds of glass garbage each year. Assume the standard deviation is 2.2 pounds. Find the
probability that the mean of a sample of 55 families will be between 17 and 20 pounds.

What’s the domain of this function? fastttt

Josephine has a great garden with and area of 2x2 + x - 6 square feet

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?