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10. A random sample of 160 observations was selected from a binomial population, and 82 successes were observed. Do the data provide sufficient evidence to indicate that the population proportion p is greater than 0.5? Use the critical value approach and the p-value approach, and test at a= 0.05: Test statistic = Critical Value(s) = Conclusion: Interpretation: 11. Calculate the value of the test statistic when testing .1 2vs. Ha:01#62, if two random samples of 10 and 12 observations produced sample variances equal to 7.50 and 3.20, respectively