Suppose that the population of heights of all fully grown male West African giraffes is approximately normally distributed. A recent article published in the Zoology Now journal claims that the mean of this population is 2.12 m. You want to test the claim made in the article, so you select a random sample of 10 fully grown male West African giraffes and record the height of each. Follow the steps below to construct a 90% confidence interval for the population mean of all heights of fully grown male West African giraffes. 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. Take Sample Sample size: Point estimate: Sample standard deviation: Critical value: Number of giraffes Compute 10 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 mean 5.223 Standard error: Margin of error: Sample standard deviation 90% confidence interval: 1.514 Critical values 10.00s= 3.250 ¹0.010 2.821 ¹0.025=2.262 10.050 1.833 0.100 1.383
Suppose that the population of heights of all fully grown male West African giraffes is approximately normally distributed. A recent article published in the Zoology Now journal claims that the mean of this population is 2.12 m. You want to test the claim made in the article, so you select a random sample of 10 fully grown male West African giraffes and record the height of each. Follow the steps below to construct a 90% confidence interval for the population mean of all heights of fully grown male West African giraffes. 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. Take Sample Sample size: Point estimate: Sample standard deviation: Critical value: Number of giraffes Compute 10 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 mean 5.223 Standard error: Margin of error: Sample standard deviation 90% confidence interval: 1.514 Critical values 10.00s= 3.250 ¹0.010 2.821 ¹0.025=2.262 10.050 1.833 0.100 1.383
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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