A Quality Analyst wants to construct a control chart for determining whether three machines, all producing the same product, are under control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results: Machine Measurements
Number1 17 15 15 17
Number2 16 25 18 25
Number3 23 24 23 22
What is the estimate of the process mean for whenever it is under control?
a. 16
b. 19
c. 20
d. 21
e. 23

c. 20

Explanation:

The summary of the given information shows that a Quality Analyst sampled four units of output from each machine, with the following results:

Machine Measurements

Number 1        17 15 15 17

Number 2       16 25 18 25

Number 3       23 24 23 22

In order to determine the estimate of the process mean for whenever it is under control, we need to find the mean of each Machine and find the average of the three machines together

i.e

For Machine Number 1 ;

Mean = (17+15+15+17)/4

Mean = 64/4

Mean = 16

For Machine Number 2 ;

Mean = (16+25+18+25)/4

Mean = 84/4

Mean = 21

For Machine Number 3;

Mean = ( 23+24+23+22)/4

Mean = 92/4

Mean = 23

∴

The estimate of the process mean for whenever it is under control

= (16 + 21 + 23)/3

The estimate of the process mean for whenever it is under control = 60/3

The estimate of the process mean for whenever it is under control = 20

1   all nations face the problem of scarcity because there are limited resources and unlimited wants. nations do not have enough factors of production to produce everything that their population wants. entrepreneurial resources initiate businesses to make new goods and services; labor resources produce goods and services.

2 there are four factors of production: natural resources, labor resources, capital resources, and entrepreneurial resources. natural resources are raw materials from nature that are used to produce goods. trees, water, and grains are natural resources. some natural resources, such as wheat and cattle, are renewable

3 wants

things that you do not need to have in order to survive, but would like to have

needs

things that you must have in order to survive

goods

physical products

services

tasks that a business perform for customers

resources

items that people can use to make or obtain what they need or want

determine

to settle or decide by choice of alternatives or possiblities

4 i really dont know