Hi everyone,

A few people were having trouble with problem #1 — webwork was not accepting the test statistic, even though their calculations were correct.  I have updated the problem to give a more accurate xbar (that is, it now shows 3 decimals instead of 2), and if you use this to calculate the test statistic it should solve the problem.  If it doesn’t, please let me know.  Apologies for the inconvenience.

Regards,

Mr. Reitz