Can someone please explain it to me ASAP??!!

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.2: Probability
Problem 14E
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Can someone please explain it to me ASAP??!!!
ANOTHER
Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card and B be the analogous event for MasterCard.
Suppose that P(A) = 0.7 and P(B) = 0.4.
(a) Could it be the case that P(AN B) = 0.5? Why or why not? [Hint: For any two sets A and B if A is a subset of B then P(A) S P(B).]
O Yes, this is possible. Since B is contained in the event An B, it must be the case that P(B) S P(A N B) and
0.5 > 0.4 does not violate this requirement.
O Yes, this is possible. Since ANBIS contained in the event B, it must be the case that P(B) S P(A N B) and
0.5 > 0.4 does not violate this requirement.
O No, this is not possible. Since B is contained in the event A N B, it must be the case that P(A N B) S P(B). However
0.5 > 0.4 violates this requirement.
O No, this is not possible. Since B is equal to AN B, it must be the case that P(A N B) = P(B). However 0.5 > 0.4 violates this requirement.
O No, this is not possible. Since AN B is contained in the event B, it must be the case that P(A N B) S P(B). However
0.5 > 0.4 violates this requirement.
(b) From now on, suppose that P(A N B) = 0.2. What is the probability that the selected student has at least one of these two types of cards?
0.5
(c) What is the probability that the selected student has neither type of card?
0.8
2:39 PM
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ion 14 5000 2
Transcribed Image Text:ANOTHER Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card and B be the analogous event for MasterCard. Suppose that P(A) = 0.7 and P(B) = 0.4. (a) Could it be the case that P(AN B) = 0.5? Why or why not? [Hint: For any two sets A and B if A is a subset of B then P(A) S P(B).] O Yes, this is possible. Since B is contained in the event An B, it must be the case that P(B) S P(A N B) and 0.5 > 0.4 does not violate this requirement. O Yes, this is possible. Since ANBIS contained in the event B, it must be the case that P(B) S P(A N B) and 0.5 > 0.4 does not violate this requirement. O No, this is not possible. Since B is contained in the event A N B, it must be the case that P(A N B) S P(B). However 0.5 > 0.4 violates this requirement. O No, this is not possible. Since B is equal to AN B, it must be the case that P(A N B) = P(B). However 0.5 > 0.4 violates this requirement. O No, this is not possible. Since AN B is contained in the event B, it must be the case that P(A N B) S P(B). However 0.5 > 0.4 violates this requirement. (b) From now on, suppose that P(A N B) = 0.2. What is the probability that the selected student has at least one of these two types of cards? 0.5 (c) What is the probability that the selected student has neither type of card? 0.8 2:39 PM A 0 ENG 2/3/2022 DELL FI F4 FS F10 F11 F12. Priser Irvsert Delete %23 %24 6 Backspace Tab E R Y P Caps Lock A G J K L Enter V B N M く ? Shift Fn Alt Alt Ctri +Home End ion 14 5000 2
b) From now on, suppose that P(A n B) = 0.2. What is the probability that the selected student has at least one of these two types of cards?
0.5
(c) What is the probability that the selected student has neither type of card?
0.8
(d) Describe, in terms of A and B, the event that the selected student has a Visa card but not a MasterCard.
O AN B'
O A'NB
O A'UB
O AUB'
Calculate the probability of this event.
0.4
(e) Calculate the probability that the selected student has exactly one of the two types of cards.
0.5
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Transcribed Image Text:b) From now on, suppose that P(A n B) = 0.2. What is the probability that the selected student has at least one of these two types of cards? 0.5 (c) What is the probability that the selected student has neither type of card? 0.8 (d) Describe, in terms of A and B, the event that the selected student has a Visa card but not a MasterCard. O AN B' O A'NB O A'UB O AUB' Calculate the probability of this event. 0.4 (e) Calculate the probability that the selected student has exactly one of the two types of cards. 0.5 Need Help? Read It ENG DELL Esc F1 F2 F3 F4 F5 FS F6 F7 F8 F9 F10 F11 F12 PriScr Insert Delete @ %23 2$ & 4 Backspac %3D E R Y { P A G K > M Alt Alt Ctri <-Uome
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