The university finance department wants to know if the average age of students at their university...

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Statistics

The university finance department wants to know if the averageage of students at their university is greater than the average forother universities. A random sample of student records is takenfrom the own university (population 1) and a random selection ofstudent ages from other three universities are taken (population2). A significance level of 0.05 is chosen.
The null and alternative hypotheses are:
?0:
??:
The samples are selected, and the results are:
?1 = 28,7?????Â Â Â ?1 = 5.1?????Â Â ?1 = 125
?2 = 24,9 ?????Â Â ?2 = 3.5 ?????Â Â ?2 = 250
Sample 1 Sample 2
n(size) 125 250
x_bar 28,7 24,9
stdev 5,1 3,5
variance 26,01 12,25
st.err
z
alpha 0,05
z_Î±
p-value

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3.6 Ratings (567 Votes)

The provided information isSample 1Sample 2Significance level is 005The researcher wants to test whether the average age of studentsat their university is greater than the average age of studentsfrom other three See Answer

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	Sample 1	Sample 2
n(size)	125	250
x_bar	28,7	24,9
stdev	5,1	3,5
variance	26,01	12,25

st.err
z
alpha	0,05
z_Î±
p-value