Anna wants to estimate the mean number of siblings for each student in her school. She records the number of siblings for each of 75 randomly selected students in the school. What is the statistic? the mean number of siblings for the randomly selected students Anna the specific number of siblings for each randomly selected student the mean number of siblings for all students in the school all the students in the school
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The mean number of siblings for the randomly selected students is indeed the statistic Anna is looking for! It’s like getting a snapshot of this small group, which can help her make educated guesses about the larger school population. If Anna decides to repeat her study with a different group of 75 students, she might get a different average. That’s the beauty of statistics: it allows for variation, which means that the results can change, providing a fun way to explore the diversity in sibling counts among students!