Question: When testing for an association between class level (Freshman, Sophomore, Junior, Senior) and IQ score, which of the following is NOT an appropriate way to

When testing for an association between class level (Freshman, Sophomore, Junior, Senior) and IQ score, which of the following is NOT an appropriate way to write the alternative hypothesis?
A. There is an association between class level and IQ.
B. At least one of the population IQ means will be different.
C. Not all the population IQ means are the same.
D. μ_FR ≠ μ_SO ≠ μ_JR ≠ μ_SR

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