MAT 300 - MAT 300 Unit 2 Milestone 2 Exam. Questions and Answers

MAT 300 - MAT 300 Unit 2 Milestone 2 Exam. Questions and Answers 1 A fast-food restaurant gave a “Customer Satisfaction Survey” in which 1500 customers rated how satisfied they were with service. The results are shown below as a table. Rating Frequency Extremely Satisfied 234 Satisfied 443 Neutral 246 Dissatisfied 203 Extremely Dissatisfied 374 The relative frequency of people who were dissatisfied with the service is __________.  13.5%  29.5%  20.3%  38.5% 2 The formula for the standard deviation of a sample is: Select the true statement for the following data set that has a mean of 8: 4, 6, 6, 6, 9, 9, 12, 12 Answer choices are rounded to the hundredths place.  The variance is 2.98 and the standard deviation is 8.86.  The variance is 8.86 and the standard deviation is 7.50.  The variance is 8.86 and the standard deviation is 2.98.  The variance is 7.50 and the standard deviation is 2.98. 3 Let x stand for the number of minutes spent waiting in line for a rollercoaster at an amusement park. 81 people are sampled at a time. The sample mean is 18 minutes and the sample standard deviation is 0.5 minutes.