Answer to Question #342279 in Statistics and Probability for Himanshi

Question #342279

Vanaspati oil is marketed in tins of 10 kg. A sample of 20 tins showed the mean weight as


9.5kg with standard deviation of 3 kg. Does the sample justify the claim that the mean


weight is 10 kg. Mention the level of significance, you use.


24) A random sample of 16 observations has mean 103.75cm. The sum of the squares of the


deviations from the mean is 843.75 cm. Can this sample be regarded as coming from the


population having 108.75cm as the mean?


25) A company supplies tooth-paste in a packing of 100gm. A sample of 10 packing’s gave the


following weights in gm.


100.5, 100.3, 100.1, 99.8, 99.7, 99.7, 100.3, 100.4, 99.2, 99.3


Does the sample support the claim of the company that the packing weighs 100 gm?

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