A teacher buys 500 pens, of which 90 are blue pen and the rest are reds and greens. It isfound that 20% of the total pens bought are defective. There are 5 defective red pens and 40defective blue pens. 250 of the non-defective pens are green.а)Construct aolej Matb)If a pen is selected at random, calculate the probability that the pen isi)green if it is known that the pen is defective.ii)defective blue pen or non-defective red pens.KMIc)Determine whether the events 'defective' and 'not a red pen' are independent.

Construct contingency table from given information.

Answered: found that 20% of the total pens bought…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A biased coin, twice as likely to come up as tails, is tossed once. If it shows heads a chip is drawn from an urn I which contains 3 white chips and 4 red chips; if it shows tails a chip is drawn form urn II, which contains 6 white chips and 3 red chips. Given that a white chip is drawn, what is the probability that the coin came up tails. a)7/16. b) 7/9. c)32/63
Choose the correct option and explain.
ANSWER ALL PARTS OR I WILL DOWN VOTE THUMBS DOWNThere are 5 red, 5 blue, 6 yellow and 4 green balls in an urn. We are looking for the probability of having drawn 3 red balls with 5 balls drawn, if removeda) with replacement andb) without replacing Further sought is the probability of drawing the order red, blue, red, blue and red, if removedc) with replacement and d) without replacing.
Consider a preschool class with four left-handed children and six right-handed children. Two children are selected without replacement. Let X be the number of left-handed children chosen.a)Find the probability noleft-handed children are chosen.b)Find the probability twoleft-handed children are chosen.c)Find the probability exactly one left-handed child is chosen.
The average number of phone calls per minute into the switch board of a company between 10.00 am and 2.30 pm is 2.5. Find the probability that during one particular minute there will be a) no phone at all b) ехаctly 3 сalls c) at least 5 calls d) at most 2 calls.
the probaility that a person in the US has type B+ blood is 11%. 4 unrelated people are slected at random A) the probability that all four have type B+ blood is B) the probability that none of the four have type B+ blood C) the probability that at least 1 has type B+ blood
a glass manufacturer finds 1 in every 500 glass items prodced is warped. find the probability that A) the first warped glass item is the 10th item produced B) the first warped item is the 1st, 2nd or 3rd item produced C) none of the first 10 items produced are defective
A data from a college shows that a certain exam has 10% passing rate. If 4 students take this exam, Find: a) probability that all of them pass it b) probability that no one pass it c) probability that at least one of them fails
At a Noodle & Company Restaurant the probability that a customer orders a nonalcoholic beverage is .50 A) Find the probability that in a sample of 14 customers none of the 14 will order a nonalcoholic beverage. B) Find the probability that in a sample of 14 customers at leaat 7 will order a nonalcoholic beverage. C) Find the probability that in a sample of 14 customers fewer than 8 will order a nonalcoholic beverage. D) Find the probability that in a sample of 14 customers all 14 will order a nonalcoholic beverage.
a) A box contains 18 batteries, out of which 5 are defective. If 3 fuses are selected at random from this box what is the probability that i. All 3 are defective ii. One of them is defective
11)Suppose that 14% of people are left handed. If 9 people are selected at random, what is the probability that exactly 2 of them are left handed? A) 0.491 B) 0.245 C) 0.0933 D) 0.0196
A Gallup poll of 1,236 adults showed that 14% believe that bad luck follows if your path is crossed by a black cat. a) Find u, o?, o, and usual values. b) Use the above information to find the probability that a total of 203 subjects believe that bad luck follows if your path is crossed by a black cat. a) Use the above information to find the probability that less than 203 subjects believe that bad luck follows if your path is crossed by a black cat.

SEE MORE QUESTIONS

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

found that 20% of the total pens bought are defective. There are 5 defecti defective blue pens. 250 of the non-defective pens are green. a) Construct a Mohor olej Ma b) If a pen is selected at random, calculate the probability tha i) green if it is known that the pen is defective.