Question 1
The selection of the null and alternative hypotheses always follows what the experimenter expects or wants to see.
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True
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False
Question 2
To test the effects of acid rain on the growth of white pine trees, a conservationist measures the diameter (in centimeters) of 200 white pines in the Allegheny National Forest in northwest Pennsylvania. The average diameter of the sampled trees is 23.42 cm. Does the sample provide sufficient evidence to conclude that the current mean diameter of the white pines is less than that recorded 50 years ago (μ= 24.8) if the standard deviation is 6 cm? Calculate thep-value and make an appropriate decision. (Useα= 0.05).
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p-value = 0.9994; fail to rejectH0
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p-value = 0.0006; rejectH0
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p-value = 0.0006; fail to rejectH0
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p-value = 0.9994; rejectH0
Citric Acid Cycle
Purple growth on mussels
Common Adverse Effects of Corticosteroids
Sources of acid deposition
This table shows the growth of a crowd at a rally over a 3 h period.