# Answer to Question #37439 in Quantitative Methods for sameehah

Question #37439

The bulbs manufactured by a company gave a mean life of 3000 hours with standard

deviation of 400 hours. If a bulb is selected at random, what is the probability it will

have a mean life less than 2000 hours?

Question:

1) Calculate the probability.

2) In what situation does one need probability theory?

3) Define the concept of sample space, sample points and events in context of

probability theory.

4) What is the difference between objective and subjective probability?

deviation of 400 hours. If a bulb is selected at random, what is the probability it will

have a mean life less than 2000 hours?

Question:

1) Calculate the probability.

2) In what situation does one need probability theory?

3) Define the concept of sample space, sample points and events in context of

probability theory.

4) What is the difference between objective and subjective probability?

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## Comments

Assignment Expert09.05.14, 15:04Dear Dinesh

If you have other questions, please post them as a new question.

Thank you.

dinesh08.05.14, 16:29Mr Sehwag invests Rs 2000 every year with a company, which pays interest at 10% p.a.

He allows his deposit to accumulate at C.I. Find the amount to the credit of the person

at the end of 5th year.

dinesh08.05.14, 16:29The price P per unit at which a company can sell all that it produces is given by the

function P(x) = 300 — 4x. The cost function is c(x) = 500 + 28x where x is the number

of units produced. Find x so that the profit is maximum.

dinesh08.05.14, 16:27In what situation does one need probability theory?

dinesh08.05.14, 16:26The bulbs manufactured by a company gave a mean life of 3000 hours with standard

deviation of 400 hours. If a bulb is selected at random, what is the probability it will

have a mean life less than 2000 hours?

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