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It is estimated that 16.6% of all adults in the U.S. are uninsured. You take...

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Accounting

It is estimated that 16.6% of all adults in the U.S. are uninsured. You take a random sample of 278 adults seen by a certain clinic and 30 are uninsured. Use the normal approximation to the binomial distribution to estimate the probability of randomly selecting 278 adults with 30 or mor them being uninsured. (a) Find the mean. (b) Find the standard deviation. (c) Find the z-score. (d) Find the probability. (e) Is this event unusual? Yes O No
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It is estimated that 16.6% of all adults in the U.S. are uninsured. You take a random sample of 278 adults seen by a certain clinic and 30 are uninsured. Use the normal approximation to the binomial distribution to estimate the probability of randomly selecting 278 adults with 30 or mo them being uninsured. (a) Find the mean. (b) Find the standard deviation. (c) Find the z-score. (d) Find the probability. (e) Is this event unusual? Yes No

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