At AjaxSpring Water, a half-liter bottle of soft drink is supposed tocontain a m

Question

At AjaxSpring Water, a half-liter bottle of soft drink is supposed tocontain a mean of 520 ml. The filling process follows a normaldistribution with a known process standard deviation of 4 ml.

Requirement 1:

Thenormal distribution should be used for the sample meanbecause (Check the appropriate box(es))

Requirement 3:

If asample of 16 bottles shows a mean fill of 515 ml, does thiscontradict the hypothesis that the true mean is 520 ml?

At AjaxSpring Water, a half-liter bottle of soft drink is supposed tocontain a mean of 520 ml. The filling process follows a normaldistribution with a known process standard deviation of 4 ml.

Explanation / Answer

Requirement 1: the population distribution is known tobe normal Requirement 2: H0: = 520, H1: 520, rejectif z > 1.96 or z

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