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Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase
Edition 6ISBN: 978-1111827021Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase
Edition 6ISBN: 978-1111827021 Exercise 67
Zoology : Hummingbirds Allen's hummingbird ( selasphorus sasin ) has been studied by zoologist Bill Alther (Reference: Hummingbirds by K. Long and w. Alther). A small group of 15 Allen's hummingbirds has been under study in Arizona. The average wait for these birds is
= 3.15 grams. Based on previous studies, we can assume that the weights of Allen's hummingbirds have a normal distribution, with = 0.33 gram.
(a) Find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error
(b) What conditions are necessary for your calculations
(c) Interpret your results in the context of this problem.
(d) Sample Size Find the sample size necessary for an 80% confidence level with a maximal margin of error E = 0.08 for the mean weights of the hummingbirds.
= 3.15 grams. Based on previous studies, we can assume that the weights of Allen's hummingbirds have a normal distribution, with = 0.33 gram.(a) Find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error
(b) What conditions are necessary for your calculations
(c) Interpret your results in the context of this problem.
(d) Sample Size Find the sample size necessary for an 80% confidence level with a maximal margin of error E = 0.08 for the mean weights of the hummingbirds.
Explanation
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From the information, observe that Allen...
Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase
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