QUESTION 1

I understand that the problem below is used to answer the next 5 MC questions. Please click True.

A bank wanted to measure if the time a customer spends at a drive-up window was within control. It took four samples of five observations each and recorded the time in minutes (see table). Use three sigma control limits to find if the process is under statistical control.

Note: Round your answer to one decimal point

Sample	Time1	Time2	Time3	Time4	Time5
1	4.5	4.2	4.2	4.3	4.3
2	4.6	4.5	4.4	4.7	4.3
3	4.5	4.6	4.4	4.4	4.6
4	4.7	4.6	4.8	4.5	4.9

True

False

QUESTION 2

1. The sample size n is

   		3
   		4
   		5
   		6

QUESTION 3

1. CL for the x-bar chart is

   		4
   		4.5
   		.7
   		.3

QUESTION 4

1. UCL for the x-bar chart is

   		4.7
   		4.0
   		4.3
   		.5

QUESTION 5

1. CL for the R chart is

   		2.1
   		4.3
   		1.2
   		.3

QUESTION 6

1. LCL for the R chart is

   		0
   		1.2
   		3.2
   		.3