It is considered quite common to have feet of unequal length. In a sample of 10 healthy college students the right-foot and left-foot lengths are given (in mm). Length in mm mean Left foot (x) 260 280 262 259 268 256 257 256 262 240 260 10.077477638554 Right foot (y) 259 277 260 254 269 258 261 249 262 238 258.7 10.562512327408 d = x - y 1 3 2 -1 -2 -4 7 1.3 3.2676869155073: 2.

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It is considered quite common to have feet of unequal length. In a sample of 10 healthy
college students the right-foot and left-foot lengths are given (in mm).
Length in mm
mean
Left foot (x) 260 280
262 259
268 256
257 256 262 240
260
10.077477638554
Right foot (y) 259 277
260 254
269 258
261 249
262 238
258.7
10.5625123274089
d = x - y
1
3
2
5
-1
-2
-4
7
2
1.3
3.26768691550733
(a) Find the test statistic.
(b) Test the claim at the 0.05 significance level.
Positive critical value:
Negative critical value:
Is there sufficient data to support the claim?
Yes
No
O O
Transcribed Image Text:It is considered quite common to have feet of unequal length. In a sample of 10 healthy college students the right-foot and left-foot lengths are given (in mm). Length in mm mean Left foot (x) 260 280 262 259 268 256 257 256 262 240 260 10.077477638554 Right foot (y) 259 277 260 254 269 258 261 249 262 238 258.7 10.5625123274089 d = x - y 1 3 2 5 -1 -2 -4 7 2 1.3 3.26768691550733 (a) Find the test statistic. (b) Test the claim at the 0.05 significance level. Positive critical value: Negative critical value: Is there sufficient data to support the claim? Yes No O O
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