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Pengujian untuk membandingkan ketahanan baterai 2 jenis handphone yaitu handphone A dan handphone B terhadap 31 orang di suatu kantor. Satu sampel dengan 15 orang

Pengujian untuk membandingkan ketahanan baterai 2 jenis handphone yaitu handphone A dan handphone B terhadap 31 orang di suatu kantor. Satu sampel dengan 15 orang dipilihsecara acak dan diberi handphone A, sedangkan sisanya 16 orang diberi handphone B. Dari pengamatan yang dilakukan selama periode tiga minggu dan untuk tiap orangdicatat rata-rata harian ketahanan baterainya. Datanya disajikan dalam Tabel berikut.

Ketahanan baterai (dalam Jam)

HP A

4,2

4,8

5,7

6,5

4,5

5,0

4,0

4,7

3,9

HP B

3,3

3,5

3,7

4,6

4,5

4,9

4,0

5,0

5,4

Ketahanan baterai (dalam Jam)

HP A

6,0

8,5

8,0

7,5

5,4

5,8

HP B

5,3

5,8

6,0

6,5

6,2

6,6

7,0

Ujilah apakah ada alasan untuk menyimpulkan bahwa kedua jenis handphone tersebut mempunyai rata-rata ketahanan baterai yang tidak sama? (Gunakan taraf signifikansi, = 5%).

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