The circumference of a particular species of tree was thought to be different depending on certain geographical factors. A random sample of 60 trees is selected in Sequoia National Forest, where it is found that sample mean = 6 meters with a standard deviation = 3 meters. A second random sample of size 40 is independently selected in Yellowstone National Forest, and it is found that sample mean = 4 meters with a standard deviation = 2 meters. Let H1 and H, represent, respectively, the true mean circumferences of trees the two- from Sequoia National Forest and Yellowstone National sample t procedures are safe to use. Forest respectively. Assume The researcher tests the following hypotheses: H. - I. H + I.

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The circumference of a particular species of tree was thought to be different depending on certain geographical
factors. A random sample of 60 trees is selected in Sequoia National Forest, where it is found that sample
mean = 6 meters with a standard deviation
selected in Yellowstone National Forest, and it is found that sample mean = 4 meters with a standard
deviation
= 3 meters. A second random sample of size 40 is independently
= 2 meters. Let H1 and H, represent, respectively, the true mean circumferences of trees
from Sequoia National
sample t procedures are safe to use.
Forest and
Yellowstone National
Forest respectively. Assume
the
two-
The researcher tests the following hypotheses:
HoiHq = H2;HaiHy # H2
Find the value of the test statistic.
2.10
3.00
4.00
3.7
Transcribed Image Text:The circumference of a particular species of tree was thought to be different depending on certain geographical factors. A random sample of 60 trees is selected in Sequoia National Forest, where it is found that sample mean = 6 meters with a standard deviation selected in Yellowstone National Forest, and it is found that sample mean = 4 meters with a standard deviation = 3 meters. A second random sample of size 40 is independently = 2 meters. Let H1 and H, represent, respectively, the true mean circumferences of trees from Sequoia National sample t procedures are safe to use. Forest and Yellowstone National Forest respectively. Assume the two- The researcher tests the following hypotheses: HoiHq = H2;HaiHy # H2 Find the value of the test statistic. 2.10 3.00 4.00 3.7
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