In Jolie’s new Thai restaurant, she observes the age of her customers and notes down which of the groups they belong to – ’18 years old and below’ or ‘above 18 years old’, and whether they spent more than $30 on a single meal - ‘big spender’ or ‘non-big spender’.  Given that rate (big spender | above 18 years old) > rate (big spender | 18 years old and below), what conclusion can be made?  a) Being a big spender and being above 18 years old are negatively associated. b) Being a big spender and being above 18 years old are positively associated. c) Being above 18 years old is positively associated with visiting her restaurant. d) Being above 18 years old causes one to become a big spender.

One of New England Air's top competitive priorities is on-time arrivals. Quality VP Clair Bond decided to personally monitor New England Air's performance. Each week for the past 30 weeks, Bond checked a random sample of 100 flight arrivals for on-time performance. Click the icon to view the table that contains the number of flights that did not meet New England Air's definition of on time. a) The overall fraction of late flights is (enter your response as a real number rounded to two decimal places.) Using a 95% confidence level, the upper and lower control limits are: Upper control limit (UCL) = Lower control limit (LCLp) = b) Assume that the airline industry's upper and lower control limits for flights that are not on time are 0.1000 and 0.0300, respectively. Choose the correct control chart below. O A. Percentage of late flights 0.14- 말 0.12- 0.10- 0.08- 0.06- 0.04- 0.02- 0.00- O A. Percentage of late flights O O c) Choose the chart below that correctly plots the percentage of late…

In the following picture there is a box diagram or two variables containing the annual income of mayors and annual income per person for a sample of 32 towns in Puerto Rico The distribution of annual income of the mayors in this 32 towns of Puerto Rico are: A. Can’t tell B. Symmetric C. Skewed to the left D. Skewed to the right