) The mean ACT mathematics score for 60 randomly selected high school students is 20.6. Assume the population standard deviation is 5.4. The mean ACT science score for 75 other randomly selected high school students is 20.8. Assume the population standard deviation is 5.6. At ? = 0.01, can you reject the claim that the ACT math and ACT science scores are equal? a.) Verify that 1.) Both population standard deviations are known. _____ 2.) The samples taken are random. _____ 3.) The samples are independent._____ 4.) The populations are known to be normally distributed or both sample sizes are greater than or equal to 30. _____
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