According to national data, 38% of US adults have blood type O-positive. Suppose that a random sample of 25 US adults is chosen. Use the Standard Deviation Rule and the properties of the sampling distribution of p-hat. There is a 68% chance that, in any random sample of 25 people, the proportion of people with blood type O-positive will be between: O .1373 and .6227 O .2829 and .4771 O .0888 and .6712

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