jacquelinewashington
New Member
USA
1 Posts 
Posted  11/07/2011 : 19:47:58

1. Among companies doing highway or bridge construction, 80% test employees for substance abuse (based on data from the Construction Financial Management Association). A study involves the random selection of 10 such companies.
A) Find the probability that exactly 5 of the 10 companies test for substance abuse. ________________________________
B) Find the probability that at least half of the companies test for substance abuse. ________________________________
C) For such groups of 10 companies, find the mean and standard deviation for the number (among


