Suppose that a random sample of 75 Republicans had a mean income of $60,000 with a standard deviation of $5,100, whereas among a random sample of 41 Democrats the mean income was $50,000 with a standard deviation of $4,100 (d) What is the critical t at the 95% confidence level (to 3 decimal places)? (e) The question of interest is whether the two population mean incomes are different. State the null hypothesis in words.
Suppose that a random sample of 75 Republicans had a mean income of $60,000 with a standard deviation of $5,100, whereas among a random sample of 41 Democrats the mean income was $50,000 with a standard deviation of $4,100 (d) What is the critical t at the 95% confidence level (to 3 decimal places)? (e) The question of interest is whether the two population mean incomes are different. State the null hypothesis in words.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Suppose that a random sample of 75 Republicans had a mean income of $60,000 with a standard deviation of $5,100, whereas among a random sample of 41 Democrats the mean income was $50,000 with a standard deviation of $4,100
(d) What is the critical t at the 95% confidence level (to 3 decimal places)?
(e) The question of interest is whether the two population mean incomes are different. State the null hypothesis in words.
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