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 8 years. A survey of 119 companies reported in The Wall Street Journal found a sample mean tenure of 6.8 years for CEOs with a standard deviation of s= 5.7 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 α=0.005. Your hypotheses are: Ho:μ≥8 Ha:μ<8What is the test statistic for this sample? test statistic = (Report answer accurate to two decimal places.)What is the p-value for this sample? p-value = (Report answer accurate to four decimal places.)The p-value is...less than (or equal to) α greater than α This test statistic leads to a decision to...reject the nullaccept the nullfail to reject the nullAs such, the final conclusion is that...There is sufficient evidence to reject the claim that the population mean is less than 8.There is not sufficient evidence to reject the claim that the population mean is less than 8.There is sufficient evidence to support the claim that the population mean is less than 8.There is not sufficient evidence to support the claim that the population mean is less than 8. A shareholders' group is lodging a protest against your company. The shareholders group claimed that the meantenure for a chief exective office (CEO) was at least 8 years. A survey of 119 companies reported in The WallStreet Journal found a sample mean tenure of 6.8 years for CEOS with a standard deviation of s = 5.7 years(The Wall Street Journal, January 2, 2007). You don't know the population standard deviation but can assume itis normally distributed.You want to formulate and test a hypothesis that can be used to challenge the validity of the claim made by thegroup, at a significance level of a = 0.005. Your hypotheses are:H.:µ > 8Ha:µ < 8What is the test statistic for this sample?test statistic =(Report answer accurate to two decimal places.)What is the p-value for this sample?p-value(Report answer accurate to four decimal places.)The p-value is...O less than (or equal to) agreater than aThis test statistic leads to a decision to...reject the nullOaccept the nullO fail to reject the nullAs such, the final conclusion is that...O There is sufficient evidence to reject the claim that the population mean is less than 8.O There is not sufficient evidence to reject the claim that the population mean is less than 8.O There is sufficient evidence to support the claim that the population mean is less than 8.O There is not sufficient evidence to support the claim that the population mean is less than 8.

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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 8 years. A survey of 119 companies reported in The Wall Street Journal found a sample mean tenure of 6.8 years for CEOs with a standard deviation of s= 5.7 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 α=0.005. Your hypotheses are: Ho:μ≥8 Ha:μ<8 What is the test statistic for this sample? test statistic = (Report answer accurate to two decimal places.) What is the p-value for this sample? p-value = (Report answer accurate to four decimal places.) The p-value is... less than (or equal to) α greater than α This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to reject the claim that the population mean is less than 8. There is not sufficient evidence to reject the claim that the population mean is less than 8. There is sufficient evidence to support the claim that the population mean is less than 8. There is not sufficient evidence to support the claim that the population mean is less than 8.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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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 8 years. A survey of 119 companies reported in The Wall Street Journal found a sample mean tenure of 6.8 years for CEOs with a standard deviation of s= 5.7 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 α=0.005. Your hypotheses are:

Ho:μ≥8
Ha:μ<8

What is the test statistic for this sample?
test statistic = (Report answer accurate to two decimal places.)

What is the p-value for this sample?
p-value = (Report answer accurate to four decimal places.)

The p-value is...

less than (or equal to) α

greater than α

This test statistic leads to a decision to...

reject the null
accept the null
fail to reject the null

As such, the final conclusion is that...

There is sufficient evidence to reject the claim that the population mean is less than 8.
There is not sufficient evidence to reject the claim that the population mean is less than 8.
There is sufficient evidence to support the claim that the population mean is less than 8.
There is not sufficient evidence to support the claim that the population mean is less than 8.

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 8 years. A survey of 119 companies reported in The Wall
Street Journal found a sample mean tenure of 6.8 years for CEOS with a standard deviation of s = 5.7 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 = 0.005. Your hypotheses are:
H.:µ > 8
Ha:µ < 8
What is the test statistic for this sample?
test statistic =
(Report answer accurate to two decimal places.)
What is the p-value for this sample?
p-value
(Report answer accurate to four decimal places.)
The p-value is...
O less than (or equal to) a
greater than a
This test statistic leads to a decision to...
reject the null
Oaccept the null
O fail to reject the null
As such, the final conclusion is that...
O There is sufficient evidence to reject the claim that the population mean is less than 8.
O There is not sufficient evidence to reject the claim that the population mean is less than 8.
O There is sufficient evidence to support the claim that the population mean is less than 8.
O There is not sufficient evidence to support the claim that the population mean is less than 8.

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