Shelf life of photographic film, Basic Statistics

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Shelf life of photographic film

The shelf life of photographic film is of interest of the manufacturer. The manufacturer observes the following shelf life for eight units chosen at random from the current production. Assume that the shelf life is normally distributed.

108 134 124 116 128 143 149 134

a. Is there evidence at a 5% level of significance that the mean shelf life is greater than or equal to 125 days?

b. If the true shelf life is 132 and we wish to have a power of 0.8, what sample size should we use?

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Basic Statistics: Shelf life of photographic film

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Basic Statistics: Shelf life of photographic film

Reference No:- TGS0866408

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Basic Statistics: Shelf life of photographic film

Reference No:- TGS0866408

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