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Suppose that the population of lengths of all fully grown male killer whales is approximately normally distributed. A recent article published in the Zoology Now journal claims that the mean of this population is 6.99 m. You want to test the claim made in the article, so you select a random sample of 10 fully grown male killer whales and record the length of each. Follow the steps below to construct a 90% confidence interval for the population mean of all lengths of fully grown male killer whales. Then state whether the confidence interval you construct contradicts the article's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. (b) Take Sample Point estimate: 0 Sample standard deviation: 0 Critical value: 0 Compute Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: 0.000 0.000 Number of killer whales 10 2.000 Sample mean 4.000 Standard error: 7.241 Margin of error: 90% confidence interval: 90% confidence interval: Based on your sample, graph the 90% confidence interval for the population mean of all the lengths of fully grown male killer whales. • Enter the values for the lower and upper limits on the graph to show your confidence interval. • For the point (◆), enter the claim 6.99 from the article. 5.000 6.000 Sample standard deviation 1.436 8.000 X Critical values €0.005 = 3.250 ¹0.010 = 2.821 ¹0.025 = 2.262 10.050 = 1.833 10.100 = 1.383 10.000 10.000

Suppose that the population of lengths of all fully grown male killer whales is approximately normally distributed. A recent article published in the Zoology Now journal claims that the mean of this population is 6.99 m. You want to test the claim made in the article, so you select a random sample of 10 fully grown male killer whales and record the length of each. Follow the steps below to construct a 90% confidence interval for the population mean of all lengths of fully grown male killer whales. Then state whether the confidence interval you construct contradicts the article's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. (b) Take Sample Point estimate: 0 Sample standard deviation: 0 Critical value: 0 Compute Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: 0.000 0.000 Number of killer whales 10 2.000 Sample mean 4.000 Standard error: 7.241 Margin of error: 90% confidence interval: 90% confidence interval: Based on your sample, graph the 90% confidence interval for the population mean of all the lengths of fully grown male killer whales. • Enter the values for the lower and upper limits on the graph to show your confidence interval. • For the point (◆), enter the claim 6.99 from the article. 5.000 6.000 Sample standard deviation 1.436 8.000 X Critical values €0.005 = 3.250 ¹0.010 = 2.821 ¹0.025 = 2.262 10.050 = 1.833 10.100 = 1.383 10.000 10.000

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Suppose that the population of lengths of all fully grown male killer whales is approximately normally distributed. A recent article published in the Zoology Now journal claims that the mean of this population is 6.99 m. You want to test the claim made in the article, so you select a random sample of 10 fully grown male killer whales and record the length of each. Follow the steps below to construct a 90% confidence interval for the population mean of all lengths of fully grown male killer whales. Then state whether the confidence interval you construct contradicts the article's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. (b) Take Sample Point estimate: 0 Sample standard deviation: 0 Critical value: 0 Compute Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: 0.000 0.000 Number of killer whales 10 2.000 Sample mean 4.000 Standard error: 7.241 Margin of error: 90% confidence interval: 90% confidence interval: Based on your sample, graph the 90% confidence interval for the population mean of all the lengths of fully grown male killer whales. • Enter the values for the lower and upper limits on the graph to show your confidence interval. • For the point (◆), enter the claim 6.99 from the article. 5.000 6.000 Sample standard deviation 1.436 + 8.000 X Critical values €0.005 = 3.250 ¹0.010 = 2.821 ¹0.025 = 2.262 10.050 = 1.833 10.100 = 1.383 10.000 10.000
Transcribed Image Text:Suppose that the population of lengths of all fully grown male killer whales is approximately normally distributed. A recent article published in the Zoology Now journal claims that the mean of this population is 6.99 m. You want to test the claim made in the article, so you select a random sample of 10 fully grown male killer whales and record the length of each. Follow the steps below to construct a 90% confidence interval for the population mean of all lengths of fully grown male killer whales. Then state whether the confidence interval you construct contradicts the article's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. (b) Take Sample Point estimate: 0 Sample standard deviation: 0 Critical value: 0 Compute Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: 0.000 0.000 Number of killer whales 10 2.000 Sample mean 4.000 Standard error: 7.241 Margin of error: 90% confidence interval: 90% confidence interval: Based on your sample, graph the 90% confidence interval for the population mean of all the lengths of fully grown male killer whales. • Enter the values for the lower and upper limits on the graph to show your confidence interval. • For the point (◆), enter the claim 6.99 from the article. 5.000 6.000 Sample standard deviation 1.436 + 8.000 X Critical values €0.005 = 3.250 ¹0.010 = 2.821 ¹0.025 = 2.262 10.050 = 1.833 10.100 = 1.383 10.000 10.000
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