1 Excel functions =NORMSDIST( z value) =NORMSINV ( probability ...

Weight
before
program
weight after
program
lost
weight?
weight
loss
189.5 198.0 0 -8.5
186 208.0 0 -22.0
175.5 176.0 0 -0.5
210 174.0 1 36.0
182 156.5 1 25.5
178 172.5 1 5.5
214 188.5 1 25.5
196 158.0 1 38.0
160 155.5 1 4.5
184 191.5 0 -7.5
184.5 148.5 1 36.0
171.5 123.0 1 48.5
176.5 151.5 1 25.0
160.5 169.0 0 -8.5
161.5 138.0 1 23.5
188 177.0 1 11.0
180.5 153.0 1 27.5
198 192.0 1 6.0
175 180.5 0 -5.5
175.5 179.0 0 -3.5
171 168.5 1 2.5
170 181.0 0 -11.0
165.5 139.5 1 26.0
192 189.5 1 2.5
157 165.5 0 -8.5
185.5 175.0 1 10.5
183 192.0 0 -9.0
213.5 187.5 1 26.0
162 189.5 0 -27.5
207 209.5 0 -2.5
184 162.5 1 21.5
221.5 239.0 0 -17.5
163.5 157.5 1 6.0
158 176.5 0 -18.5
158.5 179.0 0 -20.5
230.5 219.5 1 11.0
165 137.5 1 27.5
177 178.5 0 -1.5
171.5 138.5 1 33.0
174.5 143.0 1 31.5
average loss= 8.45 pounds
# losing wt = 24 students
# of graduates
12
10
8
6
4
2
0
z 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09
-0.5 0.3085 0.3050 0.3015 0.2981 0.2946 0.2912 0.2877 0.2843 0.2810 0.2776
-0.4 0.3446 0.3409 0.3372 0.3336 0.3300 0.3264 0.3228 0.3192 0.3156 0.3121
-0.3 0.3821 0.3783 0.3745 0.3707 0.3669 0.3632 0.3594 0.3557 0.3520 0.3483
-0.2 0.4207 0.4168 0.4129 0.4090 0.4052 0.4013 0.3974 0.3936 0.3897 0.3859
-0.1 0.4602 0.4562 0.4522 0.4483 0.4443 0.4404 0.4364 0.4325 0.4286 0.4247
0 0.5000 0.5040 0.5080 0.5120 0.5160 0.5199 0.5239 0.5279 0.5319 0.5359
0.1 0.5398 0.5438 0.5478 0.5517 0.5557 0.5596 0.5636 0.5675 0.5714 0.5753
0.2 0.5793 0.5832 0.5871 0.5910 0.5948 0.5987 0.6026 0.6064 0.6103 0.6141
0.3 0.6179 0.6217 0.6255 0.6293 0.6331 0.6368 0.6406 0.6443 0.6480 0.6517
0.4 0.6554 0.6591 0.6628 0.6664 0.6700 0.6736 0.6772 0.6808 0.6844 0.6879
0.5 0.6915 0.6950 0.6985 0.7019 0.7054 0.7088 0.7123 0.7157 0.7190 0.7224
Entry represents area under the cumulative standardized normal distribution from -infinity to Z
4
-30 to
-20-
Weight Loss of 40 Graduates
-20 to
-10-
-10 to
0-
0 to
10-
10 to
20-
# of pounds lost
20 to
30-
30 to
40-
40 to
50-