Dibuat Diperiksa Mengetahui

Tanggal 5 November 2017 Tanggal 5 November 2017 Tanggal 5 November 2017

Oleh Dira Irsanti Oleh Harly Bobby Pratama Oleh Muhammad Aufa

Jabatan Asisten Pembimbing Jabatan Koordinator Praktikum Jabatan Koordinator Asisten

TandaTangan

TandaTangan

TandaTangan

DEPARTEMEN PENDIDIKAN NASIONAL

UNIVERSITAS ANDALAS FAKULTAS TEKNIK

JURUSAN TEKNIK INDUSTRI

LABORATORIUM PERENCANAAN DAN OPTIMASI SISTEM INDUSTRI

PRE-TEST

Sampling Distribution

1. Bacalah Basmallah sebelum mengerjakan Tugas Pendahuluan

2. Buatlah peta konsep dari Distribusi Sampling!

3. Jelaskan peta konsep tersebut dalam sebuah resume (mencangkup pengertian, rumus,

karakteristik, contoh soal beserta penyelesaiannya) pada setiap bagian atau sub-bab

dari peta konsep tersebut. Minimal 3 halaman!

4. Solve the problem below.

a. Age unknown lighting products manufactured by the company ABC normal

distribution, with average 800 hours and a standard deviation of 40 hours.

Calculate the odds 16 samples taken at random will have an average age of less

than 775 hours of product.

b. Traveling between two campuses of a university in a city via shuttle bus takes,on

average, 28 minutes with a standard deviation of 5 minutes. In a given week, a bus

transported passengers 40 times. What is the probability that the average transport

time was more than 30 minutes? Assume the mean time is measured to the nearest

minute.

c. Division of quality control machine tools factory noted that 1.5% of the bearing is

defective. If the delivery of a box consists of 100 bearing products, determine the

probability of the number of defective bearing as much as 2% or more!

Dibuat Diperiksa Mengetahui

Tanggal 5 November 2017 Tanggal 5 November 2017 Tanggal 5 November 2017

Oleh Dira Irsanti Oleh Harly Bobby Pratama Oleh Muhammad Aufa

Jabatan Asisten Pembimbing Jabatan Koordinator Praktikum Jabatan Koordinator Asisten

TandaTangan

TandaTangan

TandaTangan

DEPARTEMEN PENDIDIKAN NASIONAL

UNIVERSITAS ANDALAS FAKULTAS TEKNIK

JURUSAN TEKNIK INDUSTRI

LABORATORIUM PERENCANAAN DAN OPTIMASI SISTEM INDUSTRI

d. A certain type of thread is manufactured with a mean tensile strength of 78.3

kilograms and a standard deviation of 5.6 kilograms. How is the variance of the

sample mean changed when the sample size is

(a) increased from 64 to 196?

(b) decreased from 784 to 49?

Plagiarist, TP = 0

ONE number EMPTY, TP = 0