Mountain Climbing: Accidents The following problem is based on information taken from Accidents in North American Mountaineering (jointly published by The American Alpine Club and The Alpine Club of...

Mountain Climbing: AccidentsThe following problem is based on information taken fromAccidents in North American Mountaineering(jointly published by The American Alpine Club and The Alpine Club of Canada). Letxrepresent the number of mountain climbers killed each year. The long-term variance ofxis approximately s²= 136.2. Suppose that for the past 8 years, the variance has beens
²= 115.1. Use a 1% level of significance to test the claim that the recent variance for number of mountain climber deaths is less than 136.2. Find a 90% confidence