) Listen The probability of a mean less than than 71.5, p(M < 71.5), in the previous problem having a sample of n = 9 was than the probability of a mean less than 71.5, p(M < 71.5), in the previous problem having a sample of n = 25. a) lower (because n was lower, the standard error was higher, and z was lower) b) lower (because n was lower, the standard error was lower, and z was higher) c) higher (because n was lower, the standard error was higher, and z was lower)