Great Southern Consultants Group's computer system has been down several times over the past few months, as shown below. Number of breakdowns 0 1 2 3 4 Monthly frequency 9 2 4 4 1 Each time the system is down, the firm loses an average of $400 in time and service expenses. They are considering signing a contract for preventive maintenance. With preventive maintenance, the system would be down on average only 0.5 per month. The monthly cost of preventive maintenance would be $200 a month. Which is cheaper, breakdown or preventive maintenance?

- Preventive Maintenance

Explanation:

Given that,

No. of breakdowns          0      1       2       3      4

Frequency                        9      2       4       4      1

So,

No. of breakdowns          Monthly probability

      0                                        0.45

       1                                         0.10

       2                                         0.20

        3                                        0.20

        4                                        0.05

 Total                                          1.00

As per the above data,

The breakdowns expected every month = (0 * 0.45) + (1 * 0.10) + (2 * 0.20) + (3 * 0.20) + (4 * 0.05)

= 1.30

∵ The cost expected for the breakdowns every month = 1.30 * $400

= $ 520

Now,

Per month cost of preventive maintenance = (0.5 * $400) + $200

= $ 400

Thus, preventive maintenance would be more economical.

answer: skate fast eat as$

explanation: skate fast eat as$

below i present a summary with the most relevant aspects of chapter 2, which were taken from karangan bahasa inggeris (english essays) spm: argumentative essays.

tuna wira

credit to mohana ram murugiah.

i hope to be of

teacher smiles at the students who wait for his signal to sit down. he nods briefly and the students sit down and get ready for the lesson to start. there is an air of quiet expectancy when teacher refers to the unusual things found underneath their houses that morning. whispers of bags of rice ran among the students and a student muttered reluctantly that the rice is rent for the landlord. this starts off the discussion on the issue of paying rent for the use of the landowner’s land. da wan raises the question of why the landlord owns the land rather than the farmer although they have spent a lot of time farming it. the three reasons of labour, need and inheritance are listed as reasons for the landlord’s ownership of the land. they are discussed and dismissed as inadequate reasons. they suggested a system of collective farming to the farmers. the headmaster comes down the corridor to observe the lesson. teacher very quickly changed the lesson to a geography wesson. the students followed his cue and no one gave the slightest notice < of the headmaster ‘s presence. when the headmaster leaves, teacher explains the implications of winning the scholarship. it involves bearing respontsibilities and the scholarship holder should master what is useful and return to the village. he should understand the injustices in the present system and change it to a fairer system. then, he announces the wiimnuir of the scholarship to be dawan.