We are interested in seeing if 4-ounce chocolate bars are being accurately created to contain 4-ounces. Random samples of size 5 were taken and weighed. Eight hours of observation provided the following data: LEAVE ANSWERS OUT TO 4 DECIMAL POINTS AND SHOW ALL WORK.

Sample

Mean

Range

1

3.91

0.10

2

4.00

0.13

3

3.89

0.15

4

4.12

0.16

5

3.82

0.20

6

4.04

0.12

7

4.13

0.24

8

4.06

0.18

a. Find the UCL for the R chart.

b. Find the LCL for the R chart.

c. Is this chart in control? Why/why not?

d. Find the UCL for the -chart.

e. Find the LCL for the -chart.

f. Is this process in control? Why/why not?

3 . We are interested in seeing it 4-ounce chocolate bars are being accurately created to contain 4-ounces . Random samples of size 5 were taken and weighed . Eight hours of observation provided the following date : Sample* Mean Range 3. 91 0. 10 \\2 4.00 0. 13 B 3. 89 0. 15 4 4. 12 0. 16 5 3. 82 0. 20 5 4.04 0. 12 7 4. 13 0. 24 8 4.06 0. 18 a . Find the UCL for the R chart . 6 . Find the LCL for the R chart . C. Is this chart in control ? Why / why not ?" d. Find the UCL for the *-chart . {. Find the LOL for the *-chart . f. Is this process in control ? Why / why not