Hydrogen Content Is Conjectured to Be an Important Factor in Porosity

Question

Examlex · Accepted Answer

The Answer is a.

H _ { o } : ho _ { 1 } = 0 ext { vs } H _ { \pm } : ho eq 0 ext {, Reject } H _ { o } ext { if; Reject at level } .05

if either

t \geq t _ { .025,32 } = 2.179 ext { or } t \leq - 2.179 . t = \frac { r \sqrt { n - 2 } } { \sqrt { 1 - r ^ { 2 } } } = \frac { ( .449 ) \sqrt { 12 } } { 1 - ( .449 ) ^ { 2 } } = 1.74 ext {. }

Fail to reject

H _ { 0 } /

the data
does not suggest that the population correlation coefficient differs from 0.
b.

( .449 ) ^ { 2 } = .20

so 20 percent of the observed variation in gas porosity can be accounted or by
variation in hydrogen content.

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