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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?????   ?1 = 5.1?????   ?1 = 125

?2 = 24,9 ?????  ?2 = 3.5 ?????  ?2 = 250

Sample 1Sample 2
n(size)125250
x_bar28,724,9
stdev5,13,5
variance26,0112,25
st.err
z
alpha0,05
zα
p-value

Answer & Explanation Solved by verified expert
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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