When samples of size n are drawn from a population,then the sampling distribution of the sample mean
is approximately normal,provided that n is reasonably large.
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Q3: In general,increasing the confidence level will narrow
Q4: The t-distribution and the standard normal distribution
Q5: The interval estimate 18.5 Q6: The 95% confidence interval for the population Q7: If a random sample of size 250 Q9: If a sample has 20 observations and Q10: The lower limit of the 95% confidence Q11: We can form a confidence interval for Q12: The degrees of freedom for the t Q13: The standard error of the sampling distribution![]()
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