Question: Refer to the Aquatic Biology Vol 9 2010 study of
Refer to the Aquatic Biology (Vol. 9, 2010) study of green sea turtles inhabiting the Grand Cayman South Sound lagoon, Exercise. Research shows that the curved carapace (shell) lengths of these turtles has a distribution with mean μ = 50 cm and standard deviation σ = 10 cm. In the study, n = 76 green sea turtles were captured from the lagoon; the mean shell length for the sample was x-bar = 55.5 cm. How likely is it to observe a sample mean of 55.5 cm or larger?
Answer to relevant QuestionsRefer to the American Mineralogist (October 2009) study of the evolution of uranium minerals in the Earth’s crust, Exercise. Recall that researchers estimate that the trace amount of uranium x in reservoirs follows a ...The standard deviation (or, as it is usually called, the standard error) of the sampling distribution for the sample mean, x , is equal to the standard deviation of the population from which the sample was selected, divided ...Researchers at the Terry College of Business at the University of Georgia sampled 344 business students and asked them this question: “Over the course of your lifetime, what is the maximum number of years you expect to ...A random sample of 90 observations produced a mean = 25.9 and a standard deviation s = 2.7. a. Find a 95% confidence interval for the population mean µ. b. Find a 90% confidence interval for µ. c. Find a 99% confidence ...Suppose you have selected a random sample of n = 7 measurements from a normal distribution. Compare the standard normal z-values with the corresponding (z-values if you were forming the following confidence intervals: a. 80% ...
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