H0, H1, critical and test value.

Home > Statistics Every Writer Should Know > The Stats Board > Discusssion

H0, H1, critical and test value.
Message posted by Bridget (via 12.86.17.118) on December 13, 2001 at 8:49 PM (ET)

A manufacturer states that the average lifetime of its CD players is 96 mo. The standard deviation is 8 months. Fifty CD players are selected and the average lifetime is found to be 108 months. Should the manufacturer's statement be rejected at X = .01? Assume that the variable is normally distributed. State Ho & H1. Calculate the critical value and test value. Draw a graph, make a decision and summarize the results. Can anyone help me with this. My brain is just statisticed out.
Thank you

READERS RESPOND:
(In chronological order. Most recent at the bottom.)

Re: H0, H1, critical and test value.
Message posted by JG (via 128.8.22.43) on December 15, 2001 at 5:16 AM (ET)

108 GT 98.6 , REJECT at alpha .01 level. See a basic statistics book for further details.

Your $5 contribution helps cover part the $500 annual cost of keeping this site online.