1. Suppose The commuting time from Northbay to bury varies uniformly from 135 min to 180 min. What is the probability that the drive will take less than 160 min?

2. The usage of a hospital x-ray machine was monitored for nine days. The data, rounded to the nearest hour, are listed below.

3, 13, 9, 10, 13, 21, 12, 23, 13

a) calculate mean, medium, and mowed for these data.

b) suggest a reason why you might want to exclude the least value from the calculations in part a).

3. The number of automobile accidents per week in Paschal Ville is normally distributed with a mean of 16.3 accidents and standard deviation of 2.7 accidents. What is the probability that there will be fewer than 16 automobile accidents in a given week?

4. the number 170 170 Has prime factors two, five, seven, 11, 13 and 17. How many of the possible divisors of 170 170 are even numbers?