Homework Help is Here – Start Your Trial Now!
Math
Statistics
It's proposed that the average life expectancy these days is 72.4, but recent data suggests it might be different from that. A sample size of 82 countries found a sample mean life expectancy of 74 years with a standard deviation of 20.2 years. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim at a significance level of 0.10. With hypotheses Ho: μ = 72.4 vs H₁ μ72.4, what is/are the critical value(s)? (Report answer accurate to 2 decimal places.) 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.) Our decision is to reject the null O accept the null fail to reject the null As such, the final conclusion is that O there is sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. O there is not sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. Othere is sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4. O there is not sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4.

It's proposed that the average life expectancy these days is 72.4, but recent data suggests it might be different from that. A sample size of 82 countries found a sample mean life expectancy of 74 years with a standard deviation of 20.2 years. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim at a significance level of 0.10. With hypotheses Ho: μ = 72.4 vs H₁ μ72.4, what is/are the critical value(s)? (Report answer accurate to 2 decimal places.) 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.) Our decision is to reject the null O accept the null fail to reject the null As such, the final conclusion is that O there is sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. O there is not sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. Othere is sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4. O there is not sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4.

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.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
See similar textbooks
icon
Related questions
Question
It's proposed that the average life expectancy these days is 72.4, but recent data suggests it might be different from that. A sample size of 82 countries found a sample mean life expectancy of 74 years with a standard deviation of 20.2 years. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim at a significance level of 0.10. : With hypotheses Ho: μ = 72.4 vs H₁ μ ‡ 72.4, what is/are the critical value(s)? (Report answer accurate to 2 decimal places.) 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.) Our decision is to reject the null accept the null fail to reject the null As such, the final conclusion is that there is sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. there is not sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. there is sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4. there is not sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4.
Transcribed Image Text:It's proposed that the average life expectancy these days is 72.4, but recent data suggests it might be different from that. A sample size of 82 countries found a sample mean life expectancy of 74 years with a standard deviation of 20.2 years. You want to formulate and test a hypothesis that can be used to challenge the validity of the claim at a significance level of 0.10. : With hypotheses Ho: μ = 72.4 vs H₁ μ ‡ 72.4, what is/are the critical value(s)? (Report answer accurate to 2 decimal places.) 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.) Our decision is to reject the null accept the null fail to reject the null As such, the final conclusion is that there is sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. there is not sufficient evidence to conclude that the population mean life expectancy is equal to 72.4. there is sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4. there is not sufficient evidence to conclude that the population mean life expectancy is not equal to 72.4.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 6 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Calculus For The Life Sciences
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
SEE MORE TEXTBOOKS