Math Solutions

[Steps Shown] A survey showed that 75.5% of US adults are uncomfortable overhearing someone else’s cell phone conversation in public. Suppose that 670 US adults

Question: A survey showed that 75.5% of US adults are uncomfortable overhearing someone else’s cell phone conversation in public. Suppose that 670 US adults are to be surveyed about this concern. Use the normal approximation to the binomial distribution to find the probability that at least 490 are uncomfortable overhearing someone else’s cell phone conversation in public.

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