Probability that at least seventy percent
Suppose that 76% of Americans prefer Coke to Pepsi. A sample of 80 was taken. What is the probability that at least seventy percent of the sample prefers Coke to Pepsi?
A. 0.1038
B. 0.1423
C. 0.8962
D. 0.8577
E. Can not be determined.
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Describe the null and alternative hypotheses supposing the intent of the researcher is to determine states that differ from the 70% reported by the National Center for Health Statistics.
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