Suppose that a biologist studying cuckoo birds knows that the average cuckoo bird weight in the United States is 1.32 pounds. The biologist travels to study the cuckoo birds that live in Timbuktu. Because of the desert heat in Timbuktu, the biologist believes that the birds there will be smaller, and he wants to conduct a hypothesis test using a p-value to test this belief and using alpha =0.8 as his significance level. When the biologist arrives in Timbuktu, he collects a random sample of 36 birds and finds that the weight of the cuckoos in his sample is 1.2 pounds. Suppose that it is known that the standard deviation of cuckoo bird weight in Timbuktu is 0.8 pounds. What is population from which the sample is drawn?

a. All cuckoo birds.
b. All cuckoo birds in the U. S
c. All cuckoo birds in Timbuktu.

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step-by-step explanation:

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

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