Production Quality Defective Shift Not Defective 7AM-3PM 7 113 3PM-11PM 11PM-7AM Use the given above information to fill in the next two blanks. If the two variables shift and production quality are independent, then the expected number of defectives items for the 3PM-11PM shift is (without any decimal places) 10 90 4 76 Given that this is an rxc table, what is the value for r?

Question Help The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feed three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A Bank B 6.3 6.6 6.7 6.8 7.1 6.7 7.3 7.5 7.8 7.8 9.3 7.8 4.2 5.5 5.9 6.3 77 7.7 8.5 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation o at Bank A. 0.40 min < oBank A< 0.91 min (Round to two decimal places as needed.) Construct a 90% confidence interval for the population standard deviation o at Bank B. min < OBank B