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1.How are confidence intervals useful in statistical analysis? What is the difference between confidence intervals for means and confidence intervals...
1. How are confidence intervals useful in statistical analysis? What is the difference between confidence intervals for means and confidence intervals for proportions and percentages?
2. The Police-Public Community Survey asks respondents who have been stopped by the police while driving a vehicle how many officers were on the scene during the stop. Stopped drivers who were female (N = 2033) reported a mean pf 1.14 (s = .36) officers. Construct a 95% confidence interval around this sample mean. Interpret this interval in words.
3. The General Social Survey asks respondents whether they keep a gun in their homes. In this survey, 34% of respondents (N = 1281) said they have at least one firearm. Construct a 99% confidence interval around this sample value. Interpret the interval in words.
