Chapter 6, Problem 10RQE

What percentage of all communication is screened out or changed by the receiver?”

In testing a certain kind or truck tire over rugged terrain, it is found that 20% of the trucks fail to complete the test run without a blowout. Of the next 13 trucks tested, find the probability that (a) from 2 to 6 have blowouts, (b) fewer than 4 have blowouts, and (c) more than 5 have blowouts. Click here to view page 1 of the table of binomial probability sums. Click here to view page 2 of the table of binomial probability sums. (a) The probability that from 2 to 6 trucks have blowouts is (Round to four decimal places as needed.)

A project requires 125 cubic yards of concrete sidewalk to be placed, for which 165 workhours have been budgeted. The latest weekly progress report shows that 78 cubic yards have been placed and 103 workhours have been expended to date. What is the status of the concrete placement? Significantly under budget. On budget. Significantly over budget. Status cannot be determined with information supplied.