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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 highest level of significance at which the null hypothesis cannot be rejected is .
52-Card Deck
A standard deck of playing cards comprising four suits (hearts, diamonds, clubs, spades), each with 13 ranks (from two to ten, and the face cards jack, queen, king, and ace).
Chances
Chances refer to the possibility or probability of something happening, often expressed in terms of likelihood or risk.
Not Be
Expresses negation, absence, or the non-existence of something or someone.
Compatible Events
Events in probability that can occur together without contradiction; they are not mutually exclusive.
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