Test: Chapter 4 Test Callahan This Question: 1 pt 9a120 (8 complete) ? This Test

Question

Test: Chapter 4 Test Callahan This Question: 1 pt 9a120 (8 complete) ? This Test: 20 pts possde want to obtain cash by using an ATM but it's dark and you cant see your card when you insert it The card must be inserted with the front sioe up and he prning contiqured so that the begnning of you name enters first Complete parts (a) through (c) a. what is te probability of selecting a random postion and nsen?me card with the oesuit that the card s ime ned comedy? Sect ne conec1choice beo-ard trecessary nte anwer bats complete your choice O A. The probablity is O 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 nding that it is incormectly inserted on the first attempt, butts correctly inserted on the second aempr(Assume that the sane poster Type an integer or a simplified traction complete your choice used for the first attempt could also be used for the second attempt)Select the correct choice below and, f necessary, hi in the arower box lo O A. The probabity s (Type an integer or a simplitied fraction) B. This is a trick question There is not enough intormation given to determine the answer t necessary, fill in the answer box to complete c. How many random selections are required to be absolute sure that the card wors choice because it is inserted conecty? Select the comect choice below and, i Click to select and enter your answer(s) O Type here to search

Explanation / Answer

We can insert ATM card into machine by 4 types.

a) P( card insert correctly) = 1/4 = 0.25

b) P( correctly inserted in second attempt) =

p(wrong attempt for 1st time )*p(correct attempt for 2nd time)

= (3/4)*(1/4)

= 3/16

0.19

C) total number of random selections = 4

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