Question 2.230

93. Coffee Sales. Refer to your work from Exercise 91 to answer the following questions.

  1. Find the relative frequency of days that more than 39 coffees were sold.
  2. Compute the proportion (relative frequency) of days that more than 31 coffees were sold.
  3. Compute the relative frequency of days that 31 or fewer coffees were sold. Explain how you could have used your answer from (b) to calculate this.
  4. Find the proportion of days that between 16 and 31 coffees (inclusive) were sold.

2.2.93

(a) 0.0426 (b) 0.1702 (c) 0.8298; 1 – 0.1702 = 0.9298 (d) 0.5319