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Title: You work for a consumer watchdog publication and are testing the advertising claims of a tire manufa Post by: Catracho on Jan 8, 2019 You work for a consumer watchdog publication and are testing the advertising claims of a tire manufacturer. The manufacturer claims that the life spans of the tires are normally distributed, with a mean of 40,000 miles and a standard deviation of 4000 miles. You test 16 tires and get the following life spans. Complete parts (a) through (c) below.
Title: Re: You work for a consumer watchdog publication and are testing the advertising claims of a tire ... Post by: bio_man on Jan 8, 2019 What I did was add up all the observations and divide by 16 to get:
36459.4 I'd do it again just to double check that I inserted the numbers into my calculator correctly! |