The June precipitation (in inches) for 10 randomly selected cities are listed below. Construct a 90% confidenceinterval for the population standard deviation, σ. Assume the data are normally distributed.2.0 3.2 1.8 2.9 0.9 4.0 3.3 2.9 3.6 0.8
A) (0.81, 1.83)
B) (0.32, 0.85)
C) (0.53, 1.01)
D) (1.10, 2.01)

Question

Quizplus · Accepted Answer

The sample standard deviation is calculated, and using the Chi-square distribution with 9 degrees of freedom (n-1), the 90% confidence interval for the population standard deviation is determined.

The June Precipitation (In Inches) for 10 Randomly Selected Cities