Question

According to “Reproductive Biology of the Aquatic Salamander Amphiuma tridactylum in Louisiana” (Journal of Herpetology [1999]: 100– 105), the size of a female salamander’s snout is correlated with the number of eggs in her clutch. The following data are consistent with summary quantities reported in the article. Partial Minitab output is also included.
Additional summary statistics are
a. What is the equation of the regression line for predicting clutch size based on snout-vent length?
b. What is the value of the estimated standard deviation of b?
c. Is there sufficient evidence to conclude that the slope of the population line is positive?
d. Predict the clutch size for a salamander with a snoutvent length of 65 using a 95% interval.
e. Predict the clutch size for a salamander with a snoutvent length of 105 using a 90% interval.


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  • CreatedSeptember 19, 2015
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