Question: use the onestandarddeviation chi squared 2test and the onestandarddeviation chi...
Use the one-standard-deviation chi squared χ2-test and the one-standard-deviation
chi squared χ2-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval for a sample of size n=11 with a standard deviation of s=55.
a. Upper H 0H0:
Upper H Subscript aHa: sigmaσ less than< 6,
b. 90 confidence interval