Q1

If neighbors wanted to have a speed bump installed on one part of the road, which statistical method would be most effective.

Group of answer choices

Regression with speed as an independent variable

Regression with speed as the dependent variable

Hypothesis testing with a null hypothesis that the speed is more than the posted speed

Hypothesis testing with a null hypothesis that the speed is less than or equal to the posted speed

Use a confidence interval with the posted speed as the mean

Flag question: Question 2

Question 2

4 pts

If a franchise company wanted to determine why sales were higher at some locations rather than others, what statistical process would be most appropriate?

Group of answer choices

Hypothesis testing with a null hypothesis that the sales are more than the highest sales

Use a confidence interval with the posted speed as the mean

Hypothesis testing with a null hypothesis that the sales are less than or equal to the highest sales

Regression with sales as the dependent variable

For each of the following transition matrices, determine whether the Markov chain with that transition matrix is regular: (1) Is the Markov chain whose transition matrix whose transition matrix is 0 0.5 0.5 0.5 0 0.5 0 0 regular? (Yes or No) (2) Is the Markov chain whose transition matrix whose transition matrix is 0 1 0 0.3 0 0.7 0 0 regular? (Yes or No) (3) Is the Markov chain whose transition matrix whose transition matrix is 0 1 0 0.6 0 0.4 1 0 0 regular? (Yes or No) (4) Is the Markov chain whose transition matrix whose transition matrix is 0 1 0 0 0.6 0 0.4 regular? (Yes or No) (5) Is the Markov chain whose transition matrix whose transition matrix is 0 1 0 0.3 0.2 0.5 0 1 0Procter and Gambling are testing a new toothpaste. A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. Conduct a hypothesis test to determine if at least 22% of the population will like the new toothpaste. At a 5% signicance level, use the critical value approach to determine if you should reject the null hypothesis. What is your conclusion? O Fail to reject H0, and conclude that more than 22% of people like the taste 0 Reject HO, and conclude that more than 22% of people like the taste 0 None 0 Fail to reject H0, and conclude that less than 22% of people like the taste 0 Reject H0, and conclude that less than 22% of people like the taste Question 20 1 pts Let P be the transition matrix of a Markov chain with n states. Which one of the following statements is not always true? If Q is another transition matrix of a Markov chain with n states, then =(P + Q) is the transition matrix of a Markov chain with n states. O P2 is the transition matrix of a Markov chain with n states. If P is invertible, then p-1 is the transition matrix of a Markov chain with n states. If Q is another transition matrix of a Markov chain with n states, then PQ is the transition matrix of a Markov chain with n states