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A medical researcher estimates that no more than 55% of U.S. adults eat breakfast every day. In a random sample of 250 U.S. adults, 56.4% say they eat breakfast every day. At 945; = 0.01, is there enough evidence to reject the researcher's claim? What is the critical value?

a. 2.33

b. 1.89

c. -1.89

d. 3.0

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