OpenStax, Introductory Statistics 2e §11.6 Test of a Single Variance · Exercise 7 · Statistics · Chi-square tests
Test of a Single Variance · Exercise 7
The average waiting time in a doctor’s office varies. The standard deviation of waiting times in a doctor’s office is 3.4 minutes. A random sample of 30 patients in the doctor’s office has a standard deviation of waiting times of 4.1 minutes. One doctor believes the variance of waiting times is greater than originally thought.
What type of test should be used?
OpenStax, Introductory Statistics 2e · §11.6 Test of a Single Variance · Exercise 7
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