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Isabelle was curious if sample maximum was an unbiased estimator of population maximum. She started with a large normally distributed population of test scores whose maximum was 99 points. She then took a random sample of 6 tests and calculated the maximum of the sample. She replaced those tests and repeated this process for a total of 40 trials. Her results are summarized in the dotplot below, where each dot represents the maximum score from a sample of 6 tests. EERE EEE EEE EEE 75 80 85 90 95 100 Sample maximum Based on these results, does sample maximum appear to be a biased or unbiased estimator of population maximum? Hint: The population maximum is 99. Choose 1 answer: (a) Sample maximum appears to be a biased estimator since it consistently underestimated the population maximum. (e) Sample maximum appears to be a biased estimator since it consistently overestimated the population maximum. () Sample maximum appears to be an unbiased estimator of the population maximum