STA 463/563 Syllabus

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```					                                    STA 660 – Project 5
19 September 2001
Mars, Inc., the candy manufacturer, claims that the distribution of colors in plan M&M's is:
Brown (30%), Yellow (20%), Red (20%), Green (10%), Orange (10%) and Tan (10%) [Note:
before blue came on the scene …]. Dr. Schaefer decided to examine this claim and kept track of
the each color of M&M's in vending machine sized packets of Plain M&M's. [He did this during
an exceptionally exciting period of time in 1994.] The data is stored in a file called LAB 55
DATA on the server [CASASERVER5 > USERS > MST > MSTLAB > SCHAEFRL > STA
600 > DATA FILES FOR LABS].
Packet      Brown        Yellow      Red          Green        Orange      Tan         Total
1           24           10          6            7            2           6           55
2           17           12          12           4            3           7           55
3           16           13          14           5            4           3           55
4           17           12          10           1            12          6           58
5           16           9           16           5            5           6           57
6           16           9           10           11           7           1           54
7           22           4           5            4            8           11          54
8           19           8           11           3            5           8           54
9           12           14          13           7            6           1           53
10          25           9           9            3            7           4           57
11          14           11          11           10           8           3           57
12          17           10          13           4            2           7           53
13          24           7           7            4            5           7           54
14          11           15          14           7            6           2           55
15          21           10          10           4            6           3           54
16          19           12          10           4            7           3           55
17          16           5           15           7            7           4           54
18          22.5         4           14           3            6           7           56.5
19          22           9           14           3            5           1           54
20          17           12          12           3            6           6           56
21          14           9           16           3            6           7           55
22          20           12          13           5            2           3           55
23          20           14          7            4            5           5.5         55.5
24          23           4           12           6            7           8           60
25          19           10          11           5            4           9           58
Does this evidence support Mars' claim of color proportions?
Based upon these data, how many M&Ms can you expect to get in each bag? How many of each
color?
Source: Lab Project 55 from Schaefer's STA 660 lab packet.

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