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A plastic bag manufacturer claims that the bags have a tear resistance (in Kg.) that is...

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Question

Basic Math

A plastic bag manufacturer claims that the bags have a tearresistance (in Kg.) that is distributed N(10, 1):

a) We take 9 bags and get an average tear resistance of 9.5 Kg.¿Should we believe the specifications provided by themanufacturer?

b) Find the probability that the bag will tear with 5 Kg. oforanges and 4 bottles of 1 liter of water whose containers weight25 grs.

Answer & Explanation Solved by verified expert
4.1 Ratings (477 Votes)
Let X Plastic bags tear resistance in KgaHypothesis for the test is Under Teststatistic is Here Therefore Therefore Critical value Table value For one tailed test Decision rule If then we reject at 5 level ofsignificance Decision Here Therefore Therefore    See Answer
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