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Question: Scientists debate the effects of increased carbon dioxide in the atmosphere, largely the result of burning fossil fuels. But atmospheric carbon dioxide levels have varied widely in the past in response to swings in the earth's general metabolism. If scientists knew what past levels were, they might be better able to predict what current levels portend. Scientists in the Netherlands and in Florida have proposed a method of determining carbon dioxide levels in past atmospheres by examining fossilized plants. They have discovered that leaves of certain plants respond to different levels of carbon dioxide by developing different numbers of stomata (pores) on the undersides of their leaves. Since fossilized leaves dating back to 10 million years ago are available, a technique based on stomata counts may provide strong insights. (Data from R. Monastersky, "The Leaf Annals," Science News 144 (August 28, 1993): 140-41.) How could one design a study with live plants in a laboratory setting that would calibrate stomata counts in such a way that carbon dioxide levels could be estimated? Discuss confounding variables, blocking, etc. Describe the analysis. Do not attempt a sample size calculation
In what ways was the Platform written by the Anti-Imperialist League an effective/persuasive piece of propaganda?
What are the best practice for conducting an earned value analysis for the project in question. Please provide a rationale for your determination.
For a random sample of 2500 households measured by a rating agency, describe the distribution of the possible sample proportions who watch the program.
A relative risk is a risk of matrimony an outcome statistic
What reasons will you convey to your client to justify your decision in recommending this stock? How will this recommendation impact the client?
Did the class demonstrate that the percentage was higher in Owensboro, KY? Use a = 0.01 level of significance.
If this conclusion is based on a random sample of 50 half-cups of edamames and the sample standard deviation is 3 grams, construct a 95% confidence interval for the average amount of protein in 1/2 cup of edamames.
To estimate the number of typographical errors in a 65-page manuscript, a systematic sample of pages is selected by first selecting a random number between 1 and 10 and including in the sample that numbered page and every 10th page thereafter.
In a random survey of 226 self-employed individuals, 20 reported having had their tax returns audited by the IRS in the past year. Estimate the proportion of self- employed individuals nationwide who've been audited by the IRS in the past year. a)..
Calculate the X2 statistic and show that it is the square of the z statistic. Show that the P-value from Table F agrees (up to the accuracy of the table) with your result from (a).
p-value from tstat. a one-sample t statistic for h0 micro 0 based on n 16 is tstat 2.44.a how many degrees of
Find p. Because the number of students varies from month to month, also find n, the average per month.- Make a p chart using control limits based on n students each month. Comment on control.
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