Probability Exam Worksheet With Answer Key - Math 211, Eastern Mediterranean University Page 33
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34Answer Key
Testname: MATH212CH3_PROBABILITY
= 1 - P(all five answers incorrect)
124) P(at least one correct)
4
4
4
4
4
= 1 -
= 1 - 0.32768 = 0.67232
5
5
5
5
5
125) P(rain at least one day) = 1 - P(no rain all three days)
= 1 - (0.60)(0.60)(0.60)
= 0.784
126) P(not rain at least one day) = 1 - P(rain all three days)
= 1 - (0.40)(0.40)(0.40)
= 0.936
127) A
128) D
129) B
365
1
1
130)
= 0.00000751
365
365
365
131) C
132) C
133) A
4
3
2
1
134) P(4-Aces) =
= 0.00000369
52
51
50
49
4
3
135) P(2-threes) =
= 0.0045
52
51
136) A
1
1
1
1
1
137) P(all five questions answered correctly) =
= 0.00032
5
5
5
5
5
4
4
4
4
4
138) P(all five questions answers incorrect) =
= 0.32768
5
5
5
5
5
= 1 - P(all five answers incorrect)
139) P(at least one correct)
4
4
4
4
4
= 1 -
= 1 - 0.32768 = 0.67232
5
5
5
5
5
140) P(rain at least one day) = 1 - P(no rain all three days)
= 1 - (0.60)(0.60)(0.60)
= 0.784
141) P(not rain at least one day) = 1 - P(rain all three days)
= 1 - (0.40)(0.40)(0.40)
= 0.936
142) A
143) C
144) B
365
1
1
145)
= 0.00000751
365
365
365
146) B
147) A
148) A
149) B
150) A
151) A
152) A
153) A
33
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