A medical researcher surveyed 12 hospitals and found that the standard deviation for the cost for removing a person's gall bladder was $45. Assume that variable is nrmally distributed. What would be the 90% confidence interval of the population variance?
Question options:
1001.2<σ2<2139.1 |
|
1354.3<σ2<3689.2 |
|
1132.2<σ2<4868.9 |
|
1234.2<σ2<2345.7 |
|
None of these |
For critical value of Chi square, used chi sqare Statistical table
Get Answers For Free
Most questions answered within 1 hours.