The distribution of answers to an aptitude test given by 100 students are - strongly approve 23, approve 18, indifferently 24 , disapprove 17 and strongly disapprove 18. Do these answers diverse significantly from the distribution to be expected?
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Answer:
Sharon Green started helping prepare students for the PSAT and SAT as a 13-year-old assistant at
her father’s college entrance tutoring course; she has never stopped since. A National Merit Scholar,
she holds degrees from Harvard College, New York University School of Education, and the
University of California at Berkeley. Her test preparation books, all published by Barron’s, run the
gamut from the California High School Proficiency Examination to the GRE. Whenever she can dig
her way out from under multiple dictionaries, Sharon enjoys folk dancing, reading Jane Austen and
science fiction, and watching Little League baseball.
Dr. Ira Wolf has had a long career in math education. In addition to teaching math at the high school
level for several years, he was a professor of mathematics at Brooklyn College and the Director of
the Mathematics Teacher Preparation program at SUNY Stony Brook.
Dr. Wolf has been helping students prepare for the PSAT, SAT, ACT, and SAT Subject Tests in
Math for more than 35 years. He is the founder and president of PowerPrep, a test preparation
company on Long Island that currently works with more than 1,000 high school students each yea
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