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Sea Star Wasting Disease Kills Sea Stars (I

Question 44

Multiple Choice

Sea star wasting disease kills sea stars (i.e., starfish) and has no known cause. It is currently a major problem on the West Coast and many sea stars are infected and dying. Consider a study in which a researcher is interested in whether susceptibility varies between the species. He travels to a site known to show wasting and counts the numbers of healthy and wasting individuals from three different species. His data is shown in the histogram below.

Sea star wasting disease kills sea stars (i.e., starfish)  and has no known cause. It is currently a major problem on the West Coast and many sea stars are infected and dying. Consider a study in which a researcher is interested in whether susceptibility varies between the species. He travels to a site known to show wasting and counts the numbers of healthy and wasting individuals from three different species. His data is shown in the histogram below. ​    ​ -To determine whether there appears to be a statistically significant relationship between species and prevalence of wasting disease he would conduct a χ<sup>2</sup> analysis. After performing this analysis, which of the ranges below best describes the P value he would obtain? A)  P > 0.05 B)  0.05 > P > 0.025 C)  0.025 > P > 0.01 D)  P < 0.01
-To determine whether there appears to be a statistically significant relationship between species and prevalence of wasting disease he would conduct a χ2 analysis. After performing this analysis, which of the ranges below best describes the P value he would obtain?


A) P > 0.05
B) 0.05 > P > 0.025
C) 0.025 > P > 0.01
D) P < 0.01

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