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A. (iii)
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B. (ii)
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D. None of the other choices is correct
E. (iv)
A random sample of 50 observations was made
on the diameter of spot welds and the corre-
sponding weld shear strength. Given that the
sample correlation coefficient is 0.7. Test the
hypothesis that Hop = 0, H₁ p 0 at the
0.05 level of significance. Let to.025,48 = 2.01.
(i) to 6.79, reject Ho.
=
(ii) to
(iii) to
(iv) to
=
6.79, fail to reject Ho.
8.85, reject Ho.
8.85, fail to reject Ho.
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