treveon paddled 35 miles downstream in his boat. the speed of the water current was 4 miles per hour. mark paddled 10 miles upstream in his boat. the speed of the water current was 2 miles per hour. the total trip took 9 hours and 40 minutes. about how much time did the part of the trip take?

(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