62% of adults in a population have an HDTV in their home. You randomly select 45 adults and ask them if they have an HDTV in their home. What is the probability that at most 20 of them respond yes? Use binomial distribution and normal distribution approximation. Compare your results.
Added by Yolanda H.
Step 1
The mean (μ) of a binomial distribution is calculated as np, where n is the number of trials and p is the probability of success. In this case, n = 45 (the number of adults selected) and p = 0.62 (the probability of an adult having an HDTV). So, μ = 45 * 0.62 = Show more…
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