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You are conducting a study to see if the typical doctor's salary (in thousands of dollars) is significantly different from 98. Your sample data (n=8) produce the test statistic t=-1.23.  Find the p-value accurate to 4 decimal places.

You are conducting a study to see if the typical doctor's salary (in thousands of dollars) is significantly different from 98. Your sample data (n=8) produce the test statistic t=-1.23.  Find the p-value accurate to 4 decimal places.

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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You are conducting a study to see if the typical doctor's salary (in thousands of dollars) is significantly different from 98. Your sample data (n=8) produce the test statistic t=-1.23.  Find the p-value accurate to 4 decimal places.

 

Test the claim that the mean GPA of night students is significantly different than 3 at the 0.02 significance level. The null and alternative hypothesis would be: Ο Η : μ = 3 H : μ < 3 O Ho: p = 0.75 H₁: p < 0.75 Ο Ηo : μ = 3 H₁:μ ‡3 Ho: p= 0.75 H₁ :p>0.75 O Ho: p = 0.75 H₁: p/ 0.75 Ο Η : μ = 3 Η : μ > 3 Based on a sample of 40 people, the sample mean GPA was 2.99 with a standard deviation of 0.03 The test statistic is The positive critical value is Based on this we O fail to reject the null hypothesis Orain hocic (to 3 decimals) (to 3 decimals)
Transcribed Image Text:Test the claim that the mean GPA of night students is significantly different than 3 at the 0.02 significance level. The null and alternative hypothesis would be: Ο Η : μ = 3 H : μ < 3 O Ho: p = 0.75 H₁: p < 0.75 Ο Ηo : μ = 3 H₁:μ ‡3 Ho: p= 0.75 H₁ :p>0.75 O Ho: p = 0.75 H₁: p/ 0.75 Ο Η : μ = 3 Η : μ > 3 Based on a sample of 40 people, the sample mean GPA was 2.99 with a standard deviation of 0.03 The test statistic is The positive critical value is Based on this we O fail to reject the null hypothesis Orain hocic (to 3 decimals) (to 3 decimals)
A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was less than 10 years. A survey of 55 companies reported in The Wall Street Journal found a sample mean tenure of 8.7 years for CEOs with a standard deviation of 4.2 years (The Wall Street Journal, January 2, 2007). You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by the group, at a significance level of 0.002. Your hypotheses are: Ho : μ > 10 H₁ : µ< 10 What is the test statistic for this sample? (Report answer accurate to 3 decimal places.) What is the p-value for this sample? (Report answer accurate to 4 decimal places.) This test statistic leads to a decision to O reject the null accept the null O fail to reject the null As such, the final conclusion is that O there is sufficient evidence to conclude that the population mean tenure for CEOs is equal to 10. O there is not sufficient evidence to conclude that the population mean tenure for CEOs is equal to 10. O there is sufficient evidence to conclude that the population mean tenure for CEOs is less than 10. O there is not sufficient evidence to conclude that the population mean tenure for CEOs is less than
Transcribed Image Text:A shareholders' group is lodging a protest against your company. The shareholders group claimed that the mean tenure for a chief exective office (CEO) was less than 10 years. A survey of 55 companies reported in The Wall Street Journal found a sample mean tenure of 8.7 years for CEOs with a standard deviation of 4.2 years (The Wall Street Journal, January 2, 2007). You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by the group, at a significance level of 0.002. Your hypotheses are: Ho : μ > 10 H₁ : µ< 10 What is the test statistic for this sample? (Report answer accurate to 3 decimal places.) What is the p-value for this sample? (Report answer accurate to 4 decimal places.) This test statistic leads to a decision to O reject the null accept the null O fail to reject the null As such, the final conclusion is that O there is sufficient evidence to conclude that the population mean tenure for CEOs is equal to 10. O there is not sufficient evidence to conclude that the population mean tenure for CEOs is equal to 10. O there is sufficient evidence to conclude that the population mean tenure for CEOs is less than 10. O there is not sufficient evidence to conclude that the population mean tenure for CEOs is less than
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