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 z-score 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 z-score 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 z-score for a standard normal distribution for a 95% confidence interval. | |
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