here are summary statistics for randomly selected weight of newborn girls in equals 250 x equals 31.1 AC equals 6.6 HZ construct a confidence interval of the mean using 90% confidence level at these results very different from the car​

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]