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 79
companies reported in The Wall Street Journal found a sample mean
tenure of 6.6 years for CEOs with a standard deviation of 5.5 years
(The Wall Street Journal, January 2, 2007).
Solution :
Given that,
Population mean =
= 7
Sample mean =
= 6.6
Sample standard deviation = s = 5.5
Sample size = n = 79
Level of significance =
= 0.10
This is a left tailed test.
The test statistics,
t = (
-
)/ (s/
)
= ( 6.6 - 7 ) / ( 5.5 /
79 )
= -0.539
P- Value = 0.2958
Greater than
.
Fail to reject null hypothesis.
There is not sufficient evidence to conclude that the population mean tenure for CEOs is less than 8.
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Please provide the correct answers for the ones marked with a
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The first picture contains the whole math problem. The second
picture contains only b which I need the answer for. The p-value
has a dropdown option sonesse choose the correct answer from there.
THANKS IN ADVANCE!!!
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A shareholders' group, in lodging a protest, claimed that the
mean tenure for a chief executive officer (CEO) was at least nine
years. A survey of companies reported in The Wall Street
Journal found a sample mean tenure of x...