Administrators of a large local church would like to estimate the average weekly donation per member per week. A random sample of 65 church members was found to have an average donation of $50.40 and a standard deviation of $12.30. Construct a 99% confidence interval to estimate the true average weekly donation for all members.

Solve the x in the equation x^2+14x+17=-96

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

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?