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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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freezo1994 freezo1994
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4 months ago
Use the following to answer the questions below:

A certain species of tree has an average life span of 130 years. A researcher has noticed a large number of trees of this species washing up along a beach as driftwood. She takes core samples from 27 of those trees to count the number of rings and measure the widths of the rings. Counting the rings allows the researcher to determine the age of each tree. The average age of the trees in the sample is approximately 120 years. One of her interests is determining if this sample provides evidence that the average age of the driftwood is less than the 130 year life span expected for this type of tree. If the average age is less than 130 years it might suggest that the trees have died from unusual causes, such as invasive beetles or logging.


Use the provided randomization distribution (based on 100 samples) to estimate the p-value for this sample. Use your p-value and a 5% significance level to make a decision about these hypotheses. Be sure to word your decision in the context of the problem.

Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
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vlad8919vlad8919
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4 months ago
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freezo1994 Author
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4 months ago
Just got PERFECT on my quiz
Lourd Jenkins
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
kriggs62
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2 hours ago
Smart ... Thanks!
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