Suppose that a manager is interested in estimating the average amount of money customers spend in her store. after sampling 36 transactions at random, she found that the average amount spent was $ 35.25 35.25 . she then computed a 95 95 % confidence interval to be between $ 31.84 31.84 and $ 38.66 which statement gives a valid interpretation of the interval? the store manager is 95% confident that the average amount spent by the 36 sampled customers is between s31.84 and $38.66. there is a 95% chance that the mean amount spent by all customers is between $31.84 and $38.66. o there is a 95% chance that a randomly selected customer will spend between $31.84 and $38.66. the store manager is 95% confident that the average amount spent by all customers is between $31.84 and s3866