How do you round $3.80 to the nearest dollar? explain your thinking

How long would it take for a ball dropped from the top of a 576-foot building to hit the ground? round your answer to two decimal places.

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.