Acute Otitis media, an infection of the middle ear, is a common childhood illness. There are various ways to treat the problem. To help determine the best way, researchers conducted an experiment. One hundred and eighty children between 10 months and two years with recurrent acute otitis media were divided into three equal groups. Group 1 was treated by surgically removing the adenoids (adenoidectomy), the second was treated with the drug Sulfafurazole, and the third with a placebo. Each child was tracked for 2 years during which time all symptoms and episodes of acute otitis media were recorded. (Keller, 9th Edition, p. 588)

Researchers collected data for the following variables: Number of episodes of the illness, number of visits to a physician because of any illness, number of prescriptions, number of days with symptoms of respiratory infection. Can the researchers conclude that there are differences between the three groups with respect to the number of episodes, number of physician visits, number of prescriptions, and number of days with symptoms of respiratory infections?

DATA FILE:

ID Number Group Episodes Visits Prescriptions Days 1 1 6 5 6 22 2 1 2 0 2 8 3 1 3 2 4 8 4 1 2 1 2 5 5 1 4 2 4 14 6 1 3 3 2 7 7 1 2 1 2 6 8 1 4 2 2 11 9 1 4 4 4 9 10 1 2 2 2 7 11 1 4 3 4 11 12 1 5 4 5 16 13 1 3 1 4 10 14 1 6 7 6 21 15 1 3 2 4 8 16 1 2 0 2 9 17 1 4 3 4 14 18 1 3 2 3 7 19 1 2 0 4 7 20 1 3 2 2 11 21 1 2 0 2 11 22 1 2 0 3 8 23 1 1 1 1 6 24 1 2 1 2 5 25 1 2 1 2 8 26 1 3 3 3 11 27 1 4 2 3 13 28 1 3 1 3 11 29 1 3 2 4 14 30 1 3 3 2 7 31 1 3 2 4 12 32 1 2 2 2 10 33 1 4 2 5 14 34 1 2 0 4 7 35 1 3 2 3 11 36 1 5 3 3 21 37 1 3 2 3 11 38 1 3 2 3 12 39 1 5 5 7 23 40 1 4 3 3 13 41 1 2 1 2 8 42 1 3 1 2 11 43 1 6 4 6 20 44 1 2 2 3 7 45 1 3 1 2 11 46 1 4 3 4 12 47 1 7 6 7 25 48 1 7 7 7 22 49 1 2 0 1 10 50 1 3 1 3 15 51 1 2 2 3 10 52 1 2 2 1 5

53 1 4 2 5 13 54 1 4 3 4 15 55 1 2 1 2 9 56 1 4 2 4 10 57 1 4 2 5 17 58 1 4 2 4 12 59 1 3 1 2 9 60 1 4 4 4 9 61 2 3 1 2 7 62 2 1 0 0 5 63 2 4 4 5 14 64 2 4 3 5 20 65 2 5 3 5 17 66 2 3 2 5 14 67 2 3 1 5 12 68 2 4 2 4 19 69 2 2 1 0 6 70 2 2 0 1 7 71 2 5 3 7 12 72 2 3 3 3 10 73 2 2 0 1 7 74 2 3 1 1 6 75 2 4 4 4 14 76 2 5 5 5 16 77 2 4 2 2 12 78 2 1 1 1 5 79 2 4 3 3 17 80 2 2 0 4 8 81 2 3 3 5 8 82 2 4 3 3 16 83 2 4 2 5 13 84 2 4 2 6 17 85 2 2 0 2 7 86 2 4 3 3 10 87 2 3 1 4 11 88 2 4 2 5 16 89 2 3 2 4 9 90 2 2 2 5 16 91 2 2 1 1 9 92 2 3 1 2 8 93 2 2 2 0 7 94 2 5 3 5 22 95 2 1 0 2 4 96 2 3 1 1 13 97 2 1 1 1 6 98 2 4 4 6 9 99 2 3 1 3 7 100 2 2 1 4 10 101 2 2 2 2 7 102 2 1 0 1 5 103 2 3 2 1 13 104 2 2 1 2 6 105 2 4 2 4 19

106 2 4 3 4 18 107 2 3 2 2 14 108 2 3 1 1 11 109 2 4 3 2 14 110 2 1 1 0 7 111 2 3 2 2 13 112 2 2 1 3 7 113 2 3 3 2 9 114 2 3 3 3 10 115 2 3 1 3 9 116 2 4 3 5 14 117 2 2 2 2 6 118 2 2 2 2 8 119 2 3 3 3 12 120 2 3 3 4 15 121 3 2 2 2 11 122 3 3 1 3 9 123 3 3 3 2 10 124 3 3 3 1 13 125 3 3 3 3 7 126 3 3 1 5 13 127 3 3 1 3 7 128 3 5 5 6 19 129 3 2 2 3 11 130 3 4 2 3 19 131 3 4 3 4 11 132 3 3 3 5 15 133 3 3 1 2 7 134 3 2 0 2 8 135 3 4 2 5 13 136 3 5 4 6 20 137 3 5 3 7 18 138 3 4 2 4 10 139 3 4 3 6 14 140 3 3 1 3 10 141 3 4 4 4 13 142 3 6 6 8 26 143 3 2 0 2 8 144 3 3 3 3 7 145 3 7 6 8 29 146 3 3 1 3 10 147 3 5 6 6 24 148 3 4 3 3 18 149 3 6 5 6 27 150 3 3 3 4 12 151 3 1 2 3 5 152 3 2 0 0 11 153 3 3 1 1 14 154 3 2 2 0 7 155 3 4 2 4 15 156 3 4 4 3 13 157 3 3 1 3 13 158 3 4 4 4 19

159 3 5 5 6 11 160 3 2 0 0 9 161 3 3 1 2 15 162 3 3 3 4 7 163 3 3 2 2 12 164 3 3 1 5 9 165 3 4 2 2 14 166 3 4 4 4 15 167 3 2 0 3 10 168 3 3 1 2 14 169 3 3 3 5 10 170 3 1 0 1 5 171 3 1 0 1 5 172 3 2 0 1 12 173 3 4 3 3 10 174 3 7 5 5 16 175 3 4 3 4 18 176 3 5 5 3 17 177 3 3 2 2 15 178 3 4 4 4 18 179 3 3 1 2 13 180 3 4 4 4 8

Conduct the necessary tests to address the researchers' question. You should use Excel to conduct your analyses and should use ONLY the p-value rule to make your decision. Do NOT INCLUDE or use critical values to make your decisions. You do not need to list the 7-step process, just be sure you state your hypotheses and choose your alpha BEFORE conducting the test and include the p-value in the text. Perform a report to present your findings. Use the following as an outline for your case write-up (use the rubric for guidance!):

• Introduction
• A discussion of the analysis you are conducting and why you chose it
• Brief discussion of basic descriptive statistics and check for outliers
• A discussion of your selected alpha and why you chose it (i.e, carefully consider the consequences of Type I and Type II errors and which would be worse in terms of this analysis),
• The required conditions of the chosen analysis and your analysis of whether the data meet those conditions
• Your analysis of each research hypothesis. Be sure to clearly state all hypotheses for any test you are using in your analysis,
• Discussion of your results and a conclusion. This should not be simply re-stating the hypothesis test conclusion. Consider your findings and discuss any implications of those findings. You may make suggestions for further research or to improve the study.

You should use only summary tables within the text of your report. If any data is within your text, it should be something you are discussing. I do not need to see the raw data anywhere. You should include yourExcel outputin an Appendix so I can refer to it if there is a problem. Please be sure to reference the grading rubric for more guidance as to my expectations. I will verify whether you have chosen the correct ANOVA, so please check with me! And, as always, please do ask if you have any questions about anything!