Discussion:
Q: We captured data from 100 men in North and South Carolina concerning their weights. Is there a statistically significant difference in the weights of men from North Carolina to South Carolina? We want to be 95% confident in our results. The data is shown below...
North Carolina South Carolina
166.16 211.19
178.83 222.04
161.77 180.46
195.77 172.88
196.53 217.54
189.23 165.48
207.84 198.80
232.80 203.25
155.13 192.43
203.17 219.94
197.24 190.25
188.80 210.71
167.58 192.27
214.60 170.85
242.21 142.36
229.41 181.38
208.06 226.24
192.25 213.02
168.24 180.44
210.36 190.57
209.68 234.87
213.40 186.24
207.70 184.09
207.81 209.68
185.17 211.74
194.24 188.28
238.39 196.93
265.57 214.53
200.60 207.47
233.49 178.01
171.03 194.09
186.84 180.28
205.99 155.03
186.46 196.48
218.52 168.02
206.92 198.30
182.49 189.31
195.33 194.27
206.06 197.45
187.16 206.36
243.83 209.80
205.25 207.96
174.88 204.21
207.41 172.19
181.77 205.90
174.57 198.22
200.04 200.67
239.07 225.73
192.96 199.09
238.09 207.10
192.00 286.44
198.56 155.58
211.06 216.28
191.41 193.24
162.66 179.37
205.95 225.75
207.13 199.48
213.58 208.64
214.81 212.98
158.40 199.71
172.84 158.27
197.77 182.72
189.11 182.29
199.87 171.54
231.65 153.79
224.10 234.58
208.19 184.19
220.06 252.35
164.85 203.12
159.14 160.04
196.23 239.98
184.50 199.17
194.57 145.29
179.46 215.45
174.36 148.86
171.18 236.67
214.76 187.92
192.56 160.86
217.36 196.79
220.86 212.23
195.06 200.54
230.80 202.50
202.36 201.98
241.97 195.22
198.59 174.26
215.01 163.81
222.06 210.49
226.36 181.24
209.71 183.30
144.90 183.98
240.76 217.14
210.68 183.70
174.05 172.57
239.04 207.19
208.38 182.35
182.46 216.01
246.20 194.71
193.70 241.31
204.89 209.72
153.56 197.44