Question  Answer 
For a population with a mean of 78 and SAMPLE st dev of 8, find the margin of error for a 95% confidence interval using an SRS population of 20.  
In a population of 5000 wombats, 800 are found to eat snarks. To 3 decimal places, find a 99% confidence interval for the proportion of wombats that eat snarks.  
What term is given for the standard deviation of a statistic estimated from data?  
To 3 decimal places, find the zscore for a standard normal distribution for a 99% confidence interval.  
The mean of an approximately normal set of data is 12 and the standard deviation is 2.1. If an SRS of 6 is taken, find the sample standard deviation.  
Given a population mean of 112, a SAMPLE standard deviation of 15, and an SRS of 50, determine a 95% confidence interval.  
If the population proportion is 0.8, and the population is 400, find the standard deviation of the proportion.  
 Question  Answer 
To 3 decimal places, find the zscore for a standard normal distribution for a 90% confidence interval.  
The mean height for a group of aliens is 64.5 inches w/a st dev of 2.5. Find the probability that the mean height of an SRS of 10 aliens is 65.3 inches.  
If the standard deviation of x is 2, the standard deviation of y is 5, and the correlation coefficient between them is r = 0.8, determine the slope of the regression line.  
For a population with a mean of 78 and st dev of 8, find the margin of error for a 95% confidence interval using an SRS population of 20.  
Given a population mean of 112, a standard deviation of 15, and an SRS of 50, determine a 95% confidence interval.  
To 3 decimal places, find the zscore for a standard normal distribution for a 95% confidence interval.  

Show Comments