A Precision Instrument Is Guaranteed to Read Accurately to Within

Short Answer

A precision instrument is guaranteed to read accurately to within 2 units. A sample of four instrument readings on the same object yielded the measurements 360, 358, 358, and 362. Test the null hypothesis that = 0.7 against the alternative > 0.7. Use = 0.05.
Test statistic = ______________
Critical Value(s) = ______________
Conclusion: ______________
Interpretation: ____________________________
Find a 90% confidence interval for the population variance.
______________