The national average for an 8^th grade reading comprehension test is 73.A school district claims that its eighth-graders outperform the national average.In testing the school district's claim,how does one define the population parameter of interest? A)The mean score on the 8^th grade reading comprehension test. B)The number of 8^th graders that took the reading comprehension test. C)The standard deviation of the score on the 8^th grade reading comprehension test. D)The proportion of 8^th graders that scored above 73 on the reading comprehension test.

Question

Quizplus · Accepted Answer

The population parameter of interest in this case is the mean score on the 8th-grade reading comprehension test. This is because the school district is claiming that their eighth-graders outperform the national average, meaning that they believe that their mean score is higher than the national average of 73. Therefore, to test this claim, we need to compare the district's mean score to the national average.

The National Average for an 8th Grade Reading Comprehension Test

The National Average for an 8^th Grade Reading Comprehension Test