PENGUJIAN HIPOTESIS RATA-RATA &
PROPORSI DUA POPULASI
1.
Diketahui dari penelitian terhadap sepuluh perusahaan
asing yang diambil sebagai sampel acak, memiliki
modal (dalam milyar rupiah) sebesar 10, 9, 8, 7, 4, 6, 5,
1,2, 11, dan 14. Sementara itu, dari penelitian terhadap
8 perusahaan nasional yang diambil sebagai sampel
acak, memiliki modal (dalam milyar rupiah) sebesar 9, 7,
15, 12, 8, 10, 13, dan 14.
a. Dengan alpha = 5%, ujilah pendapat bahwa rata-rata
modal perusahaan asing sama dengan rata-rata
modal perusahaan nasional, dengan alternatif tak
sama.
PENGUJIAN HIPOTESIS RATA-RATA &
PROPORSI DUA POPULASI
2.
In a wage discrimination case involving male and
female employees, independent samples of male and
female employees with five years’ experience or more
provided the hourly wage results shown below. The
null hypothesis is that male employees have a mean
hourly wage less than or equal to that of the female
employees. Rejection of H0 leads to the conclusion
that male employees have a mean hourly wage
exceeding that of the female employees. Test the
hypothesis with  = .01. Does wage discrimination
appear to be present in this case?
Male Employees
n1 = 14
x1 = 9,25
s1 = 1
Female Employees
n2 = 12
x2 = 8,70
s2 = 0,8