Heights of Volcanoes A random sample of heights (in feet) of active volcanoes in North America, outside of Alaska, is shown. Is there sufficient evidence that the standard deviation in heights of volcanoes outside Alaska is less than the standard deviation in heights of Alaskan volcanoes, which is 2385.9 feet? Use α = 0.10. Use a graphing calculator with the program SDHYP and the P-value method. Assume that the variable is approximately normally distributed. 10,777 8159 11,240 10,456 8363   (a) State the hypotheses and identify the claim with the correct hypothesis. (b) Find the P-value. (c) Make the decision. (d) Summarize the results.

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Heights of Volcanoes A random sample of heights (in feet) of active volcanoes in North America, outside of Alaska, is shown. Is there sufficient evidence that the standard deviation in heights of volcanoes outside Alaska is less than the standard deviation in heights of Alaskan volcanoes, which is 2385.9 feet? Use α = 0.10. Use a graphing calculator with the program SDHYP and the P-value method. Assume that the variable is approximately normally distributed.

10,777
8159
11,240
10,456
8363
 
(a) State the hypotheses and identify the claim with the correct hypothesis.
(b) Find the P-value.
(c) Make the decision.
(d) Summarize the results. 
 
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