Hopkins MKTG 5360 Exam 3 Questions with Correct Answers Latest Update 2025
what are the 4 steps in hypothesis testing? - Answers 1. state the null and alt hypotheses
2. state the level of significance (alpha)
3. run anaylsis, find the p value and compare it to alpha
4. make a decision!
What does the null hypothesis state? - Answers There is no relationship between variable X and
variable Y .... example: males and females GPA's don't differ
what does the alternative hypothesis state? - Answers the opposite of the null
hypothesis...example: male and females GPA do differ
What is a significance level? - Answers fixed value that we compare with the P-value
critical probability, confidence level, Alpha, probability level selected is typically .05 or .01, too
low to warrant support for the null hypothesis
explain p-value: - Answers The smallest level of significance, at which a no hypothesis may be
rejected, using the obtained value of the test statistic
bottom line:
p < alpha ... we reject the null!
type 1 and type 2 errors - Answers look at graph on PP
what consists of parametric statistics? - Answers mean/normal distributed data and interval
data
What consists of nonparametric statistics? - Answers ordinal data
Choosing the right statistic depends on three things... - Answers type of measurement, nature of
comparison, number of groups to be compared
Steps in testing a hypothesis - Answers 1. State the null and alternative hypotheses
2. Set the criteria for a decision
3. Collect data and compute sample statistics
4. Make a decision
what are the 4 steps in hypothesis testing? - Answers 1. state the null and alt hypotheses
2. state the level of significance (alpha)
3. run anaylsis, find the p value and compare it to alpha
4. make a decision!
What does the null hypothesis state? - Answers There is no relationship between variable X and
variable Y .... example: males and females GPA's don't differ
what does the alternative hypothesis state? - Answers the opposite of the null
hypothesis...example: male and females GPA do differ
What is a significance level? - Answers fixed value that we compare with the P-value
critical probability, confidence level, Alpha, probability level selected is typically .05 or .01, too
low to warrant support for the null hypothesis
explain p-value: - Answers The smallest level of significance, at which a no hypothesis may be
rejected, using the obtained value of the test statistic
bottom line:
p < alpha ... we reject the null!
type 1 and type 2 errors - Answers look at graph on PP
what consists of parametric statistics? - Answers mean/normal distributed data and interval
data
What consists of nonparametric statistics? - Answers ordinal data
Choosing the right statistic depends on three things... - Answers type of measurement, nature of
comparison, number of groups to be compared
Steps in testing a hypothesis - Answers 1. State the null and alternative hypotheses
2. Set the criteria for a decision
3. Collect data and compute sample statistics
4. Make a decision
