A survey of seniors over 65 years old in 32 cites showed that 15.2% of them had a college education. And another survey of younger people (20-30) showed that 19.7% of them had obtained a college education. From previous studies we know that o1=7.2% and sigma * 2 = 5 %. So, based on all this:A. does this mean that the mean of the younger crowd is truly higher? Use alpha = 5% .B. Find the interval for the means at 90% confidence.
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The null hypothesis (H0) is that the mean of the younger crowd is not higher than the older crowd. The alternative hypothesis (H1) is that the mean of the younger crowd is higher. H0: μ1 - μ2 ≤ 0 H1: μ1 - μ2 > 0 Where μ1 is the mean of the younger crowd and μ2 Show more…
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