Exhibit 12-1 a Card Dealing Machine Deals Spades (1),hearts (2),clubs

Exhibit 12-1 A card dealing machine deals spades (1) ,hearts (2) ,clubs (3) ,and diamonds (4) at random as if from an infinite deck.In a randomness check,1,600 cards were dealt and counted.The results are shown below. Refer to Exhibit 12.1.Using the p-value approach and α = 0.05,the decision and conclusion are:

A) Do not reject the null hypothesis,all of the population proportions are the same
B) Reject the null hypothesis,conclude that not all proportions are equal to 0.20
C) Reject the null hypothesis,conclude that not all proportions are equal to 0.25
D) Do not reject the null hypothesis,cannot conclude that not all of the proportions are equal to 0.25