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SCENARIO 9-9
The president of a university claimed that the entering class this year appeared to be larger than the entering class from previous years but their mean SAT score is lower than previous years.He took a sample of 20 of this year's entering students and found that their mean SAT score is 1,501 with a standard deviation of 53.The university's record indicates that the mean SAT score for entering students from previous years is 1,520.He wants to find out if his claim is supported by the evidence at a 5% level of significance.
-Referring to Scenario 9-9,the president can conclude that there is sufficient evidence to show that the mean SAT score of the entering class this year is lower than previous years with no more than a 5% probability of incorrectly rejecting the true null hypothesis.
Down Syndrome
Down Syndrome is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21, leading to developmental and intellectual delays.
Genetic Determinants
Factors encoded in an individual’s DNA that influence their traits, characteristics, and likelihood of developing certain diseases or conditions.
Knock-In Mice
Genetically engineered mice in which a gene has been precisely altered by the insertion of a modified gene or a reporter gene at a specific locus.
Knockout Mice
Genetically engineered mice in which one or more specific genes have been made inoperative to study gene function.
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