Question

You are a patrol captain attending a staff meeting. An analyst that works for your department is presenting the results of a study intended to determine which of four separate patrol strategies are the most effective at reducing speeding around schools.

The analyst states that he conducted a series of t-tests to compare the frequency of speed violations within four neighborhoods with different types of patrol strategies. He concludes that Strategy A is the most effective because the frequency of speed violations is less when individually compared to the strategies used in other neighborhoods.

Briefly critique the model that this analyst used. Be sure to include answers to the following questions in your response.

1. Is the statistical model (t-test) used by this analyst appropriate in this situation?

2. If not, then why? (Be specific here using the information you learned in the t-test and ANOVA mini-lectures.)

3. Which statistical technique should he have used, and why?

Answer 1

Answer :

1) the statistical model (t-test) used by this analyst appropriate in this situation is

• No, the measurable model (t-test) utilized by this expert isn't proper in this circumstance.

2)

• As , we realize that when we need to test the mean of two or one populace then we use t test however when we need to look at the mean of in excess of two populace then we use ANOVA .
• and here is the trial of 4 neighborhood with various sorts of petroleum methodology.

3) the statistical technique should he have used as

• ANOVA is the best factual strategies which ought to be use here so as to look.
• the methods for of 4 populace , as ANOVA is utilized to think about the methods for in excess of two populace.