A shareholders' group is lodging a protest against your company. The shareholders group claimed that themean tenure for a chief exective office (CEO) was at least 9 years. A survey of 87 companies reported inThe Wall Street Journal found a sample mean tenure of 8.4 years for CEOS with a standard deviation ofs = 5.2 years (The Wall Street Journal, January 2, 2007). You don't know the population standarddeviation but can assume it is normally distributed.You want to formulate and test a hypothesis that can be used to challenge the validity of the claim madeby the group, at a significance level of a = 0.02. Your hypotheses are:H.:µ 2 96 > 1:"HWhat is the test statistic for this sample?test statistic =(Report answer accurate to 3 decimal places.)What is the p-value for this sample?p-value =(Report answer accurate to 4 decimal places.) As such, the final conclusion is that..O There is sufficient evidence to warrant rejection of the claim that the population mean is less than9.O There is not sufficient evidence to warrant rejection of the claim that the population mean is lessthan 9.OThe sample data support the claim that the population mean is less than 9.O There is not sufficient sample evidence to support the claim that the population mean is less than 9.

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 at least 9 years. A survey of 87 companies reported in The Wall Street Journal found a sample mean tenure of 8.4 years for CEOS with a standard deviation of s = 5.2 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed. 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 a = 0.02. Your hypotheses are: H.:µ 2 9 Ha:µ < 9 What is the test statistic for this sample? test statistic = (Report answer accurate to 3 decimal places.) What is the p-value for this sample? p-value = (Report answer accurate to 4 decimal places.)

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 at least 9 years. A survey of 87 companies reported in The Wall Street Journal found a sample mean tenure of 8.4 years for CEOS with a standard deviation of s = 5.2 years (The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume it is normally distributed. 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 a = 0.02. Your hypotheses are: H.:µ 2 9 Ha:µ < 9 What is the test statistic for this sample? test statistic = (Report answer accurate to 3 decimal places.) What is the p-value for this sample? p-value = (Report answer accurate to 4 decimal places.)

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

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 at least 9 years. A survey of 87 companies reported in
The Wall Street Journal found a sample mean tenure of 8.4 years for CEOS with a standard deviation of
s = 5.2 years (The Wall Street Journal, January 2, 2007). You don't know the population standard
deviation but can assume it is normally distributed.
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 a = 0.02. Your hypotheses are:
H.:µ 2 9
6 > 1:"H
What is the test statistic for this sample?
test statistic =
(Report answer accurate to 3 decimal places.)
What is the p-value for this sample?
p-value =
(Report answer accurate to 4 decimal places.)

As such, the final conclusion is that..
O There is sufficient evidence to warrant rejection of the claim that the population mean is less than
9.
O There is not sufficient evidence to warrant rejection of the claim that the population mean is less
than 9.
OThe sample data support the claim that the population mean is less than 9.
O There is not sufficient sample evidence to support the claim that the population mean is less than 9.

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