Don't need help with the middle. The top is the background and the bottom is the question I need help with. Thank you

Next 5 questions are based on this information: The average number of minutes a pharmaceutical sales representative spends with a customer is 20 minutes with a standard deviation of 5 minutes. The number of minutes is normally distributed. Denote the random variable in this problem by the letter X. What is X? Select one: O a. Pharmaceutical Sales Representatives O b. Minutes pharmaceutical sales reps. spent with each customer. O c. 20 minutes O d. Customer description Clear my choice Jane Ta is an experienced sales representative and is in the bottom 5% in terms of amount of time spent with each customer. What is the most amount of time Ms. Ta is spending with customers? Round to 2 decimal places. Answer: What percentage of sales representatives spend more than 28 minutes with their customers? Round to 2 decimal Add-ir