Question

jeremy wants to know the average word length in an essay that he wrote. he decides to take a random sample of 20 words. he closes his eyes and points to a word on his essay. he does this 20 times, resulting in the 20 randomly - selected words shown below. he calculates the average word length in his list and finds that it is 5.45 letters. what could jeremy do to help him test the accuracy of his prediction? there is nothing he can do to check the accuracy of his prediction. only do the random sampling once. choose the 20 longest words in the essay and take the average of their lengths.

Explanation:

To test the accuracy of a prediction based on a sample, more samples are beneficial. Random - sampling multiple times gives a better idea of the variability and helps in assessing the accuracy of the initial prediction. Selecting only the 20 longest words is a biased sample and doing the random sampling only once doesn't help in testing accuracy.

Answer:

None of the provided options are correct. He should take multiple random samples of 20 words and compare the average word lengths of those samples to his initial prediction.