Once down to about 15, the world’s only wild flock of whooping cranes now numbers a record 237 birds in its Texas Coastal Bend wintering ground (www.SunHerald.com). The average whooping crane egg weighs 208 grams. A new batch of randomly selected eggs was recently weighed, and their weights are listed. Assume the variable is normally distributed. 210 208.5 211.6 212 210.3 a. Find the best point estimate for the population mean. b. Find the best point estimated of the population standard deviation. c. What is the appropriate test to be used to test the hypothesis? Explain why. d. The world’s only wild flock of whooping cranes concludes that the weight is greater than 208 grams. Test the hypotheses using 99% confidence level and summarize your conclusion.
Once down to about 15, the world’s only wild flock of whooping cranes now numbers
a record 237 birds in its Texas Coastal Bend wintering ground (www.SunHerald.com).
The average whooping crane egg weighs 208 grams. A new batch of randomly selected
eggs was recently weighed, and their weights are listed. Assume the variable is
normally distributed.
210 208.5 211.6 212 210.3
a. Find the best point estimate for the population mean.
b. Find the best point estimated of the population standard deviation.
c. What is the appropriate test to be used to test the hypothesis? Explain why.
d. The world’s only wild flock of whooping cranes concludes that the weight is greater
than 208 grams. Test the hypotheses using 99% confidence level and summarize
your conclusion.
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