Which statement is true about the variability of the distributions? the interquartile range of the typing speeds after the course is greater than the interquartile range of the speeds before the course. the interquartile ranges of the two distributions are the same. the range of the speeds after the course is smaller than the range of the speeds before the course. the ranges of the two distributions are the same.

(co 3) the times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 9.4 minutes. a random sample of 25 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? no, the probability of this outcome at 0.035, would be considered usual, so there is no problem yes, the probability of this outcome at 0.035, would be considered unusual, so the display should be redone no the probability of this outcome at 0.359 would be considered usual, so there is no problem yes, the probability of this outcome at 0.965 would be considered unusual, so the display should be redone