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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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fattykay92 fattykay92
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Salary data were collected from CEOs in the consumer products industry and CEOs in the telecommunication industry. The data were analyzed using a software package in order to compare mean salaries of CEOs in the two industries.

      HYPOTHESIS: MEAN X = MEAN Y

SAMPLES SELECTED FROM SALARY

X = Consumer Products
Y = Telecommunications
SAMPLE MEAN OF X =1761
SAMPLE VARIANCE OF X =3.97555E6
SAMPLE SIZE OF X =21
SAMPLE MEAN OF Y =1093.5
SAMPLE VARIANCE OF Y =103255
SAMPLE SIZE OF Y =21
MEAN X - MEAN Y =667.5
test statistic =1.47809
D. F. =40
P-VALUE =0.147626
P-VALUE/2 =0.0738131
SD. ERROR =451.597

What of the following assumptions is necessary to perform the test described above?

▸ The standard deviations of the two populations of salaries are both large.

▸ The population of salaries for each of the two industries has an approximately normal distribution.

▸ The means of the two populations of salaries are equal.

▸ None. The Central Limit Theorem takes care of all assumptions
Textbook 
Statistics

Statistics


Edition: 12th
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macemace
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fattykay92 Author
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4 years ago
Helped a lot
TheMoffattMan
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Yesterday
this is exactly what I needed
kater28
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2 hours ago
Thanks
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