A lab learner is assiduous in whether lab rats that gain-ground
up unmatched gain-ground as liberal as lab rats that gain-ground up with other rats environing them to
play with. He randomly selects 10 pubescent rats with approximately the identical age
and greatness. Five of these earn exhaust the direct indecent monthsunmatched and the other five
rats earn each accept three other rats to play with during the identical date. After
indecent months, the learner measures the abdomen circuit of perfect the rats
(in mm). The results are shown below:
The scantling instrument and scantling trutination deviations are
xbar1= 113.8 and s1 =
7.98, xbar2= 127.8 and s2 =
scantling trutination deviations are fairly plug in appreciate. Based on these estimates,
it is grave to feign that the two population variances are resembling?
What can we allege about the appreciate of the P-value?
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