Question 5 A Last year the mean cost u for a one-bedroom rental in a certain city was $1,200 per month. Eli is looking for a one-bedroom apartment and is investigating whether the mean cost is less now than what it was last year. A random sample of apartments had a sample mean ž of $1,180 per month. Assuming all conditions for inference are met, El will conduct a hypothesis test as part of his investigation. Which of the following is the correct set of hypotheses? Họ : 4= 1,200 H:4> 1,200 Họ : - 1,200 H : A< 1,200 H, :2 1,200 H:< 1,200 H : - 1,180 H :2 1,180 Ho :- 1,180 H :< 1,180

The phrase “Correlation does not equal causation” means:   Question 30 options:   there is no guarantee that a cause-and-effect relationship exists between two variables that are correlated.   there is only a 30% chance that a cause-and-effect relationship exists between two variables.   a cause-and-effect relationship only certainly exists when data are gathered in a specific way.   a cause-and-effect relationship can only exist with ratio-level variables.

Sarah thinks that she has lost interest in online shopping. Based on her shopping history, she can see that her average purchases in the past were about 4 items on average each week. Since this last month, she can now see that she has only purchased 2 items on average each week, (with a SD of 1). To determine whether her shopping habits have changed, what statistical test should be used here?

If two large random samples are drawn from two populations, each having a mean of $100, the relevant sampling distribution of their difference has a mean of a. 200 b. The Sum of the 2 Sample Means C. 0 D. The difference between the two sample means.