MA145 Final Exam Skill Inventory
The final exam will consist of a number of multiple choice questions, some of which may require you to use either a spreadsheet or MINITAB. You will also need to use the Technology section of the web page.
Regression (Chapter 4)
Given pairs of x and y values, you sould be able to:
- Find the slope of the regression line using the SLOPE function
- Find the intercept of the regression line using the INTERCEPT function
- Find the correlation coefficient using the CORREL function
- Provide an interpretation of the slope and intercept in the context of the problem.
- Be able to compute the RMS error (see class notes)
The Normal Probability Distribution (Chapter 7)
Given the mean and standard deviation of a bell curve distribution, you should be able to use the NORMDIST function
to determine the proportion of the population that is:
- Less than or equal to a given value
- Greater than or equal to a given value
- Between two given values
- Either less than or equal to a given value, or greater than or equal to a second given value.
You should also be able to use the NORMINV function to determine the value that represents the given percentile of the population.
Sample Means (Chapter 8)
Given the mean and standard deviation of a bell curve distribution, and the size of the sample, you should be able to
determine:
- The mean of the bell curve distribution of the sample mean
- The standard deviation of the sample mean (which is the original standard deviation divided by the square root of the sample size)
You should also be able to use the bell curve distribution of the sample mean to determine the proportion of time the sample mean will be:
- Less than or equal to a given value
- Greater than or equal to a given value
- Between two given values
- Either less than or equal to a given value, or greater than or equal to a second given value.
Confidence Intervals (Chapter 9)
Given an alpha level and the results of a sample, you should be able to compute confidence intervals for:
- The mean of a population with known standard deviation
- The mean of a population with unknown standard deviation
- A population proportion
Hypothesis Testing (Chapter 10)
Given the results of a sample, you should be able to test a given hypothesis:
- Concerning the mean of a population with known population standard deviation
- Concerning the mean of a population with unknown population standard deviation
- Concerning a population proportion
Inference About Two Means or Proportions (Chapter 11)
You should be able to test for equality given:
- A paired or dependent sample
- Two proportions
- Two means with known standard population deviation
- Two means with unknown population standard deviation