The probubilily that a randonly selected person uses a credi card beqnily Round
ID: 3259588 • Letter: T
Question
The probubilily that a randonly selected person uses a credi card beqnily Round to tvee decimal places as needed ) ur kely tor someone to use .oedt card bequ ty? O A. Yes, becane teprobablity ofl a ranoy selected person uning a credit card frequely is greater than OB. because the probably ot arardady selected person urg aerea cardbeperey isgred" han 005. O C. Yes because the probability of a randomily selected person using a cedt card eqny i s than or equal to 05 oo. aneBeprobablly of a randondy selededperson usegaeredteard bepertly is less than or e-to005 How are all of thene resuts affected by the fact that the responses were abtained by thoe who decided to nespond to a survey posted on the Ind O A. Sce this is a voutary epoesample, vaild concusions can only be dn about the specic group of people who chone to parcipae O C. Sece es i n avountary ponse sampls, vald concusions can only bed about he specic group of people who chase to paop ok to sent you wens)Explanation / Answer
Solution:-
a) The probability that a randomly selected person uses a credit card frequenctly is 0.6690
Total number of people = 4224
Number of persons that uses a credit card frequenctly = 2826
The probability that a randomly selected person uses a credit card frequenctly = 2826/4224 = 0.6690
b) No, beacuse the probability of a randomly selected person using a credit card frequently is greater than 0.05.
c) Since this is not a voluntary response sample, valid conclusion can be drawn about the entire population of credit card users.
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