What percentage of trucks can be expected to travel either less than 50 or more than 80 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 50 or more than 80 thousand miles in a year is nothing%. (Round to two decimal places as needed.)

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x