Please select the correct answer: Person Before After 1 176 164 2 192 191 3 185
ID: 3176581 • Letter: P
Question
Please select the correct answer:
Person Before After
1 176 164
2 192 191
3 185 176
4 177 176
5 196 185
6 178 169
7 196 196
8 181 172
9 158 158
10 201 193
11 191 185
12 193 189
13 176 175
14 212 210
15 177 173
16 183 180
17 210 204
18 198 192
19 157 152
20 213 200
21 161 161
22 177 166
23 210 203
24 192 186
25 178 170
For each paired difference, compute After – Before. In Data Analysis, t-Test: Paired Two Sample for means, select the After data for Variable 1 Range. Note that the critical value output by Data Analysis for this test is always positive. In this problem, the sign of the critical value is negative corresponding to a 1-tailed test with lower reject region and negative lower critical value.
What are the Null and Alternate Hypotheses?
Question 15 options:
H0: After – Before > 0; HA: After – Before 0
H0: After – Before 0; HA: After – Before > 0
H0: After – Before = 0; HA: After – Before 0
H0: After – Before 0; HA: After – Before < 0
H0: After – Before > 0; HA: After – Before 0
H0: After – Before 0; HA: After – Before > 0
H0: After – Before = 0; HA: After – Before 0
H0: After – Before 0; HA: After – Before < 0
Explanation / Answer
from above Ho: after-before>=0
Ha: after -before <0
as p value is very less we reject null hypothesis.
before after difference(d) 176 164 -12 192 191 -1 185 176 -9 177 176 -1 196 185 -11 178 169 -9 196 196 0 181 172 -9 158 158 0 201 193 -8 191 185 -6 193 189 -4 176 175 -1 212 210 -2 177 173 -4 183 180 -3 210 204 -6 198 192 -6 157 152 -5 213 200 -13 161 161 0 177 166 -11 210 203 -7 192 186 -6 178 170 -8 mean -6.4 std deviaition 4.0373 std error= std dev/(n)^(1/2) 1.8055 t stat= (d-0)/std error -3.5446 p value = 0.0082Related Questions
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