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Question 7 Taking a random sample from a population allows us to: O Generalize our results from a test of significance to the population. O Determine cause and effect. O Construct a null distribution O Obtain a narrow confidence intervalQuestion 8 1.5 pts A 95% confidence interval is computed to estimate the mean household income for a city. Which of the following values will definitely be within the limits of this confidence interval? O The sample standard deviation. O The sample mean. O The population mean. O The p-value