Statistics MCQ: April 2018

True or False : Consider the following events:
Event A = The survey respondent is a registered Republican. Event B = The survey respondent lives in North Carolina. Events A and B are mutually exclusive.

Answer: False

Statistics MCQ

True or False : When the p-value is greater than a, the conclusion for the hypothesis test is to reject the null hypothesis.

True or False : When the p-value is greater than a, the conclusion for the hypothesis test is to reject the null hypothesis.

True or False : There is no guarantee that every confidence interval taken from a population will include the population mean.

True or False : There is no guarantee that every confidence interval taken from a population will include the population mean.

True or False : The margin of error for a sample is dependent on the sample mean.

True or False : The margin of error for a sample is dependent on the sample mean.

True or False : As the sample size increases, the interval that contains 95% of the sample means become narrower.

True or False : As the sample size increases, the interval that contains 95% of the sample means become narrower.

True or False : The higher the standard error of the mean, the less variation you will notice from one sample mean to the next as they are drawn from the population.

True or False : The higher the standard error of the mean, the less variation you will notice from one sample mean to the next as they are drawn from the population.

True or False : The z-score follows a normal distribution with µ = 0 and s = 1, which is known as the standard normal distribution.

True or False : The z-score follows a normal distribution with µ = 0 and s = 1, which is known as the standard normal distribution.

True or False : The area under the curve of the normal probability distribution is always equal to 1.0.

True or False : The area under the curve of the normal probability distribution is always equal to 1.0.

True or False : Testing whether a part is defective or not defective after it has been manufactured would be best described using a normal probability distribution.

True or False : Testing whether a part is defective or not defective after it has been manufactured would be best described using a normal probability distribution.

True or False : Consider the following events: Event A = The survey respondent is a registered Republican. Event B = The survey respondent lives in North Carolina. Events A and B are mutually exclusive.

True or False : Consider the following events:
Event A = The survey respondent is a registered Republican. Event B = The survey respondent lives in North Carolina. Events A and B are mutually exclusive.

True or False : The probability that Event A and Event B will occur refers to the union of Event A and Event B.

True or False : The probability that Event A and Event B will occur refers to the union of Event A and Event B.

True or False : The correlation coefficient is a measure of the slope of the scatter plot for the independent and dependent variables.

True or False : The correlation coefficient is a measure of the slope of the scatter plot for the independent and dependent variables.

True or False : In a quality control setting, the sample median provides enough evidence to determine if a process is working properly.

True or False : In a quality control setting, the sample median provides enough evidence to determine if a process is working properly.

True or False : When comparing two samples, the smaller coefficient of variation indicates more consistency (or less variability) within the sample or population.

True or False : When comparing two samples, the smaller coefficient of variation indicates more consistency (or less variability) within the sample or population.

True or False : One disadvantage of using the mean as a central tendency is that it can be heavily influenced by outliers.

True or False : One disadvantage of using the mean as a central tendency is that it can be heavily influenced by outliers.

True or False : Discrete data is often the result of measuring observations rather than count- ing.

True or False : Discrete data is often the result of measuring observations rather than count- ing.

True or False : When the p-value is greater than a, the conclusion for the hypothesis test is to reject the null hypothesis.

True or False : There is no guarantee that every confidence interval taken from a population will include the population mean.

True or False : The margin of error for a sample is dependent on the sample mean.

True or False : As the sample size increases, the interval that contains 95% of the sample means become narrower.

True or False : The higher the standard error of the mean, the less variation you will notice from one sample mean to the next as they are drawn from the population.

True or False : The z-score follows a normal distribution with µ = 0 and s = 1, which is known as the standard normal distribution.

True or False : The area under the curve of the normal probability distribution is always equal to 1.0.

True or False : Testing whether a part is defective or not defective after it has been manufactured would be best described using a normal probability distribution.

True or False : Consider the following events:Event A = The survey respondent is a registered Republican. Event B = The survey respondent lives in North Carolina. Events A and B are mutually exclusive.

True or False : The probability that Event A and Event B will occur refers to the union of Event A and Event B.

True or False : The correlation coefficient is a measure of the slope of the scatter plot for the independent and dependent variables.

True or False : In a quality control setting, the sample median provides enough evidence to determine if a process is working properly.

True or False : When comparing two samples, the smaller coefficient of variation indicates more consistency (or less variability) within the sample or population.

True or False : One disadvantage of using the mean as a central tendency is that it can be heavily influenced by outliers.

True or False : Discrete data is often the result of measuring observations rather than count- ing.

True or False : Consider the following events:
Event A = The survey respondent is a registered Republican. Event B = The survey respondent lives in North Carolina. Events A and B are mutually exclusive.