1. This table lists the numbers of officers and enlisted personnel for women in military. At = 0.05, is there sufficient evidence to conclude that a relationship exists between rank and branch of the Armed Forces?
Officers           Enlisted           Total
Army   10791  62,491 73282
Navy   7816    42,750 50566
Marine Corps  932      9525    10457
Air Force        11819  54,344 66163
Total   31358  169110            200468
2. Listed is information regarding organ transplantation for three different years. Based on these data, is there sufficient evidence at = 0.01 to conclude that a relationship exists between year and type of transplant?
Year    Heart   Kidney/Pancreas         Lung    Total
2003    2056    870      1085    4011
2004    2016    880      1173    4069
2005    2127    903      1408    4438
Total   6199    2653    3666    12518
3. The amount of sodium in one serving for a random sample of three different kinds of foods listed. At the 0.05 level of significance, is there sufficient evidence to conclude that a difference in mean sodium amounts exists among condiments, cereals, and deserts?
Condiments    Cereals            Desserts
270      260      100
130      220      180
230      290      250
180      290      250
80        200      300
70        320      360
200      140      300
4. Americans appear to be eating healthier. Between 1970 and 2007 the per capita consumption of broccoli increased 1000% from 0.5 to 5.5 pounds. A nutritionist followed a group of people randomly assigned to one of three groups and noted their monthly broccoli intake. At = 0.05, is there a difference in means?
Group A          Group B          Group C
2          2          3.7
1.5       1.5       2.5
0.75     4          4
1          3          5.1
1.3       2.5       3.8
3          2          2.9
5. The average local cell phone monthly bill is \$50.07. A random sample of monthly bills from three different providers is listed below. At = 0.05, is there a difference in mean bill amounts among providers?
Provider X      Provider Y      Provider Z
48.2     105.02 59.27
60.59   85.73   65.25
72.5     61.95   70.27
55.62   75.69   42.19
89.47   82.11   52.34
6. Annual child care costs for infants are considerably higher than for older children. At = 0.05, can you conclude a difference in mean infant day care costs for different regions of the United States?
New England  Midwest          Southwest
10390  9449    7644
7592    6985    9691
8755    6677    5996
9464    5400    5386
7328    8372
7. Three popular fast-food restaurant franchises specializing in burgers were surveyed to find out the number of calories in their frequently ordered sandwiches. At the 0.05 level of significance, can it be concluded that a difference in mean number of calories per burger exists?
FF#1    FF#2    FF#3
970      1010    740
880      970      540
840      920      510
710      850      510