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B P 0,4 X=0 0 0.08 X=at least 1 1+2+3+4+5 1 0.26 X=5 2 0.35 3 0.23 4 0.08 5 0.01 Answer: a) 0,08 b) 0,26 c) 0,93 d) 0,01 The probability that an entering college student will graduate is 0.4. De (a) none, (b), 1, (C) at least 1, and (d) all will graduate.

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Page 1: QUIZ_STATS_I(1)

B

P 0,4 X=0 0 0.08X=at least 1 1+2+3+4+5 1 0.26X=5 2 0.35

3 0.234 0.085 0.01

Answer:

a) 0,08b) 0,26c) 0,93d) 0,01

The probability that an entering college student will graduate is 0.4. Determine the probability that out of 5 students (a) none, (b), 1, (C) at least 1, and (d) all will graduate.

Page 2: QUIZ_STATS_I(1)

0.08 0.260.26 0.350.34 0.23

0.080.010.93

The probability that an entering college student will graduate is 0.4. Determine the probability that out of 5 students (a) none, (b), 1, (C) at least 1, and (d) all will graduate.

Page 3: QUIZ_STATS_I(1)

P

P 2 N 2000 exactly 3more than 2 1-(sum of 0,1,2)

Answer:a) 0,18b) 0,32

If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001, determine the probability that out of 2000 individuals (a) exactly 3 and (b) more than 2 individuals will suffer a bad reaction.

Page 4: QUIZ_STATS_I(1)

0 0.14 0.141-(sum of 0,1,2) 1 0.27 0.27

2 0.27 0.273 0.18 0.68 0.32

If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001, determine the probability that out of 2000 individuals (a) exactly 3 and (b) more than 2 individuals will suffer a bad reaction.

Page 5: QUIZ_STATS_I(1)

If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001, determine the probability that out of 2000 individuals (a) exactly 3 and (b) more than 2 individuals will suffer a bad reaction.

Page 6: QUIZ_STATS_I(1)

Gender Black White Total

Male 5 35 40

Female 25 15 40

Total 30 50 80

Answer:a) P(B) 30/80b) P(W) 50/80c) P(M) 40/80d) P(F) 40/80e) P(B/M) 5//40

P (B and M) 5//80P(M) 40/80P(B and M)/P(M) (5/80)/(40/80)

f) P(B and M) 5//80

Suppose we consider the experiment of randomly selecting 1 student as a representative from a class of 80 students. In this class there are 5 black male students, 25 black female students, 35 white male students, and 15 white female students, as indicated below.

Find:

P(B)P (W)P(M)P(F)P(B / M) = P(B and M) / P(M)P (B and M)

Page 7: QUIZ_STATS_I(1)

5//40

Suppose we consider the experiment of randomly selecting 1 student as a representative from a class of 80 students. In this class there are 5 black male students, 25 black female students, 35 white male students, and 15 white female students, as indicated below.

LetB = event that the student is black.W = event that the student is white.M = event that the student is male.F = event that the student was female.

Find:

P(B)P (W)P(M)P(F)P(B / M) = P(B and M) / P(M)P (B and M)

Page 8: QUIZ_STATS_I(1)

Suppose we consider the experiment of randomly selecting 1 student as a representative from a class of 80 students. In this class there are 5 black male students, 25 black female students, 35 white male students, and 15 white female students, as indicated below.

LetB = event that the student is black.W = event that the student is white.M = event that the student is male.F = event that the student was female.

Find:

P(B)P (W)P(M)P(F)P(B / M) = P(B and M) / P(M)P (B and M)

Page 9: QUIZ_STATS_I(1)

P

P 3 0 0.051 0.152 0.223 0.224 0.175 0.1

Answer:a) 0,05b) 0,15c) 0,22d) 0,22e) 0,17f) 0,1

If 3% of the electric bulbs manufactured by a company are defective, find the probability that in a sample of 100 bulbs (a) 0, (b) 1, (c) 2, (d) 3, (e) 4, and (f) 5 bulbs will be defective.

Page 10: QUIZ_STATS_I(1)

If 3% of the electric bulbs manufactured by a company are defective, find the probability that in a sample of 100 bulbs (a) 0, (b) 1, (c) 2, (d) 3, (e) 4, and (f) 5 bulbs will be defective.

Page 11: QUIZ_STATS_I(1)

If 3% of the electric bulbs manufactured by a company are defective, find the probability that in a sample of 100 bulbs (a) 0, (b) 1, (c) 2, (d) 3, (e) 4, and (f) 5 bulbs will be defective.

Page 12: QUIZ_STATS_I(1)

B

P 0,15 at most 10 add all until 10 0N 50 at least 5 add all from 5 1

between 3 and 6 add from 3 to 6 2exactly 5 3

456789

10

Answer:a) 0,88b) 0,77c) 0,35d) 0,11

Suppose that 15 percent of the population is left-handed. Find the probability that in group of 50 individuals, that there will be (a) at most 10 left-handers, (b) at least 5 left-handers, (c) between 3 and 6 left-handers inclusive, and (d) exactly 5 left-handers.

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0.0002 0.11 0.030.002 0.14 0.07

0.01 0.16 0.110.03 0.15 0.140.07 0.12 0.350.11 0.090.14 0.770.160.150.120.09

Suppose that 15 percent of the population is left-handed. Find the probability that in group of 50 individuals, that there will be (a) at most 10 left-handers, (b) at least 5 left-handers, (c) between 3 and 6 left-handers inclusive, and (d) exactly 5 left-handers.