A client wants to determine whether there is a significant difference in the time required to complete a program evaluation with the three different methods that are in common use. Suppose the times...


A client wants to determine whether there is a significant difference in the time required to complete a program evaluation with the three different methods that are in common use. Suppose the times (in hours) required for each of 18 evaluators to conduct a program evaluation follow.







































Method 1Method 2Method 3
656455
727168
697966
776558
787456
747064

Use ? = 0.05 and test to see whether there is a significant difference in the time required by the three methods.

State the null and alternative hypotheses.



1. H
0: All populations of times are identical.

    H
a: Not all populations of times are identical.


2. H
0: Median1 ≠ Median2 ≠ Median3


    H
a: Median1 = Median2 = Median3


3. H
0: Median1 = Median2 = Median3


    H
a: Median1 > Median2 > Median3


4. H
0: Median1 = Median2 = Median3


   H
a: Median1 ≠ Median2 ≠ Median3


5 .H
0: Not all populations of times are identical.

  H
a: All populations of times are identical.



Find the value of the test statistic. (Round your answer to two decimal places.)


( )


Find thep-value. (Round your answer to three decimal places.)


p-value =  ( )


State your conclusion.


1. Do not reject
H
0. There is not sufficient evidence to conclude that there is a significant difference in the time required by the three methods.

2. Reject
H
0. There is sufficient evidence to conclude that there is a significant difference in the time required by the three methods.

3. Do not reject
H
0. There is sufficient evidence to conclude that there is a significant difference in the time required by the three methods.

4. Reject
H
0. There is not sufficient evidence to conclude that there is a significant difference in the time required by the three methods.

Jun 01, 2022
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