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The probability that a bulb manufactured by a factory will fuse before 100 days of use is 0.05. Find the probability that out of 5 such bulbs at least one will fuse before 100 days of use. => 5 · ( 19 20 ) 5 or 1 - ( 19 20 ) 5 or 1 - ( 1 20 ) 5 or 5 · ( 1 20 ) 5..

A factory produces bulbs. The probability that a bulb will fuse after 200 hours of use is 0.02. Find the probability that not more than 1 out of 4 bulbs fuse after 200 hours of use. => 0.9214 or 0.9977 or 0.9419 or 0.0753..

A random sample of 100 similar iron bars manufactured at a factory had a mean diameter of 6.43 mm and a variance of 0.032 mm 2 . Find 95% confidence interval and 99% confidence interval. Which interval is smaller? => (6.40, 6.47) and (6.38, 6.48) and 95% or (6.395, 6.465) and (6..

In a factory manufacturing umbrellas, it was found that 90% of packages (containing 100 umbrellas each) did not have any defective umbrellas, 5% contained 1 defective unit each and 3% contained 2 defective units each and 2% contained 3 defective units. Find the mean, variance and standard..

Revenues of a factory are shown in the table, where t represents time in years since 1998. Find the exponential model for the data. Years since 1998( t ) 0 1 2 3 4 Revenue in billion $ (R) 5 10.3 21.218 43.70908 90.040705 => R = 3.18(2.16) t or R = 5(2.16) t or R = 5(2.06) t or ..

1. The numbers 2, 3, 5 and 8. 2. The solutions of the equation x 2 - 2x - 15 = 0. 3. The letters of the word "Chase". 4. People living in our locality. 5. The students Mary, Hillary, Catherine. 6. The workers who are absent from the factory. 7. The capital cities of Asia. 8. T..

Charles Dickens (1812 - 1870) was a great English novelist and a very popular writer even in his time. Dickens was a keen observer of human nature. He sympathised with the poor and helpless and mocked the greedy and the cruel. As a young boy Dickens had to work in a London factory past..

. The following table gives some common sound levels in decibels. Source Intensity level in dB Threshold of hearing 0 Rustle of leaves 10 Whisper (at 1m) 20 Library 30 Quite home...... 40 Office, classroom...... 50 Normal conversation.... 60 Busy traffic..... 70 Ordinary factory..

The fundamental principle of counting (F.P.C) states that if an operation can be performed in m different ways and if for each such choice, another operation can be performed in n different ways, then both operations, in succession can be performed in exactly mn different ways. The principle can ..

Summary - The fundamental principle of counting (F.P.C) states that if an operation can be performed in m different ways and if for each such choice, another operation can be performed in n different ways, then both operations, in succession can be performed in exactly mn different ways. The princi..