For the three part question, provide your answer to each part. Part B: Explain how the test point (0,0) can be used to determine which half plane should be shaded for the linear inequality 3x + y > 4. Show all work.

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.