OpenStax, Introductory Statistics 2e §11.6 Test of a Single Variance · Exercise 8 · Statistics · Chi-square tests
Test of a Single Variance · Exercise 8
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 is the test statistic?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §11.6 Test of a Single Variance · Exercise 8
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