Iissue for various con- sumer products

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Reference no: EM13754177

Have you ever been frustrated because you could not get a container of some sort to release the last bit of its contents? The article "Shake, Rattle, and Squeeze: How Much Is Left in That Container?" (Consumer Reports, May 2009: 8) reported on an investigation of this issue for various con- sumer products. Suppose five 6.0 oz tubes of toothpaste of a particular brand are randomly selected and squeezed until no more toothpaste will come out. Then each tube is cut open and the amount remaining is weighed, resulting in the following data (consistent with what the cited article reported): .53, .65, .46, .50, .37. Does it appear that the true average amount left is less than 10% of the advertised net contents?
a. Check the validity of any assumptions necessary for test-
ing the appropriate hypotheses.
b. Carry out a test of the appropriate hypotheses using a
significance level of .05. Would your conclusion change
if a significance level of .01 had been used?
c. Describe in context type I and II errors, and say which
error might have been made in reaching a conclusion.

Reference no: EM13754177

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