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# Field researcher is gathering data on the trunk diameters

• From Mathematics, Statistics
• Due on 04 Oct, 2015 10:20:00
• Asked On 03 Oct, 2015 09:28:43
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A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area.  The following are the results of his random sampling.  Can he conclude, at the 0.10 level of significance, that the average trunk diameter of a pine tree is greater than the average diameter of a spruce tree?

Pine trees              Spruce trees

Sample size                                 30                              35

Mean trunk diameter (cm)            45                              39

Sample variance                           120                           140

What is the test value for this hypothesis test?

Test value:               Round your answer to three decimal places.

What is the critical value?

Critical value:            Round your answer to three decimal places.

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## [Solved] MATH302 QUIZ 5 Complete Solution

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• Submitted On 04 Oct, 2015 12:18:52
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A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area. The following are the results of his random sampling. Can he conclude, at the 0.10 level of signific...
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## [Solved] Test comparing 2 means

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• Submitted On 04 Oct, 2015 08:59:42
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If both sample sizes are 30 or larger the central limit theorem is in effect. The test sta...
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