Can someone explain why everytime it rounds up to the thousands it doesnt keep the 4th number, it looks like it goes up by one, please answer an actually answer or get reported

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Simplify the expression 10/11(22z) + (a+5) -1

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?