Question

In: Statistics and Probability

SAT reading and writing section scores of a random sample of twenty 11th-grade students in a...

SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school are given below.
380 520 480 510 560 630 670 490 500 550
400 350 440 490 620 660 700 730 740 560
Test if the standard deviation of the reading and writing section SAT score of the students in this school is higher than 100. What is the value of the test statistic (round off to the nearest integer)?

Solutions

Expert Solution

s = 114.6115

The test statistic = (n - 1)s2/

                                 = (19 * (114.6115)^2)/(100)^2

                                 = 25

             

                                  

                      

                                                    

                      


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