You want to obtain cash by using an ATM, but it's dark and you can't see your card when you insert it. The card must be inserted with the front side up and the printing configured so that the beginning of your name enters first. Complete parts (a) through (c).
You want to obtain cash by using an ATM, but it's dark and you can't see your card when you insert it. The card must be inserted with the front side up and the printing configured so that the beginning of your name enters first. Complete parts (a) through (c).
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...
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Transcribed Image Text:You want to obtain cash by using an ATM, but it's dark and you can't see your card when you insert it.
The card must be inserted with the front side up and the printing configured so that the beginning of
your name enters first. Complete parts (a) through (c).
b. What is the probability of randomly selecting the card's position and finding that it is incorrectly
inserted on the first attempt, but it is correctly inserted on the second attempt? (Assume that the same
position used for the first attempt could also be used for the second attempt.) Select the correct choice
below and, if necessary, fill in the answer box to complete your choice.
A. The probability is
(Type an integer or a simplified fraction.)
B. This is a trick question. There is not enough information given to determine the answer.
c. How many random selections are required to be absolute sure that the card works because it is
inserted correctly? Select the correct choice below and, if necessary, fill in the answer box to complete
your choice.
A. The number of random selections required is
(Type an integer or a simplified fraction.)
B. This is a trick question. There is no finite number of attempts, because it is possible to get the
wrong position every time.
Transcribed Image Text:You want to obtain cash by using an ATM, but it's dark and you can't see your card when you insert it.
The card must be inserted with the front side up and the printing configured so that the beginning of
your name enters first. Complete parts (a) through (c).
a. What is the probability of selecting a random position and inserting the card with the result that the
card is inserted correctly? Select the correct choice below and, if necessary, fill in the answer box to
complete your choice.
A. The probability is
(Type an integer or a simplified fraction.)
B. This is a trick question. There is not enough information given to determine the answer.
b. What is the probability of randomly selecting the card's position and finding that it is incorrectly
inserted on the first attempt, but it is correctly inserted on the second attempt? (Assume that the same
position used for the first attempt could also be used for the second attempt.) Select the correct choice
below and, if necessary, fill in the answer box to complete your choice.
A. The probability is
(Type an integer or a simplified fraction.)
B. This is a trick question. There is not enough information given to determine the answer.
c. How many random selections are required to be absolute sure that the card works because it is
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