Some stores print multiple coupons and advertisements on their receipts, making the receipts unusually long. a curious shopper makes the same purchase at a random sample of 10 stores and measures the length of each receipt (in inches). here are the results: 8.25, 7.5, 5, 9.5, 12, 5.5, 9, 14, 11.5, 18 are the conditions for constructing a t confidence interval met?
a. no, the random condition is not met.
b. no, the 10% condition is not met.
c. no, the normal/large sample condition is not met.
d. yes, the conditions for inference are met.
