Exhibit 12.3 A fund manager wants to know if it equally likely that the Dow Jones Industrial average will go up each day of the week.For each day of the week,the fund manager observes the following number of days when the Dow Jones Industrial average goes up. Refer to Exhibit 12.3.Using the critical value approach,the decision and conclusion are:
A)Reject the null hypothesis,not all of the proportions are the same
B)Reject the null hypothesis,all of the proportions are not the same
C)Do not reject the null hypothesis,all of the proportions are the same
D)Do not reject the null hypothesis,cannot conclude not all of the proportions are the same

Question

Exhibit 12.3 A fund manager wants to know if it equally likely that the Dow Jones Industrial average will go up each day of the week.For each day of the week,the fund manager observes the following number of days when the Dow Jones Industrial average goes up.  Refer to Exhibit 12.3.Using the critical value approach,the decision and conclusion are:
A)Reject the null hypothesis,not all of the proportions are the same 
B)Reject the null hypothesis,all of the proportions are not the same 
C)Do not reject the null hypothesis,all of the proportions are the same 
D)Do not reject the null hypothesis,cannot conclude not all of the proportions are the same

Quizplus · Accepted Answer

The Answer of Exhibit 12.3 A fund manager wants to know if it equally likely that the Dow Jones Industrial average will go up each day of the week.For each day of the week,the fund manager observes the following number of days when the Dow Jones Industrial average goes up.  Refer to Exhibit 12.3.Using the critical value approach,the decision and conclusion are:
A)Reject the null hypothesis,not all of the proportions are the same 
B)Reject the null hypothesis,all of the proportions are not the same 
C)Do not reject the null hypothesis,all of the proportions are the same 
D)Do not reject the null hypothesis,cannot conclude not all of the proportions are the same