Conservationists working in the Antarctic keep a close eye on the physical characteristics of King Penguins as it is one indicator of changes occurring in the surrounding ecosystem. One of the parameters they track is the average weight of these Penguins. Last year, the average weight was 15.4 kilograms. This year, a sample of 35 King Penguins yielded a sample mean of 14.6 Kg and a sample standard deviation of 2.5 Kg. At the 5% level of significance, can you conclude that the average penguin weight has changed from last year? [ show excel function and inputs]
Conservationists working in the Antarctic keep a close eye on the physical characteristics of King Penguins as it is one indicator of changes occurring in the surrounding ecosystem. One of the parameters they track is the average weight of these Penguins. Last year, the average weight was 15.4 kilograms. This year, a sample of 35 King Penguins yielded a sample mean of 14.6 Kg and a sample standard deviation of 2.5 Kg. At the 5% level of significance, can you conclude that the average penguin weight has changed from last year? [ show excel function and inputs]
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Conservationists working in the Antarctic keep a close eye on the physical
characteristics of King Penguins as it is one indicator of changes occurring in the surrounding
ecosystem. One of the parameters they track is the average weight of these Penguins. Last
year, the average weight was 15.4 kilograms. This year, a sample of 35 King Penguins yielded
a sample mean of 14.6 Kg and a sample standard deviation of 2.5 Kg. At the 5% level of
significance, can you conclude that the average penguin weight has changed from last year? [ show excel
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