coin-operated drink machine was designed to discharge a mean of 7ounces of coffee per cup. In...

coin-operated drink machine was designed to discharge a mean of 7ounces of coffee per cup. In a test of the machine, the discharge amounts in14 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 7.02 ounces and 0.17 ounces, respectively. If we assume that the discharge amounts are normally distributed, is there enough evidence, at the 0.05 level of significance, to conclude that the true mean discharge, μ , differs from 7 ounces?

Perform a two-tailed test. Then fill in the table below.

The null hypothesis:	H0:
The alternative hypothesis:	H1:
The type of test statistic:	(Choose one)Z.t.Chi Suare,F

The value of the test statistic: (Round to at least three decimal places.)
The two critical values at the 0.05 level of significance: (Round to at least three decimal places.)	and
At the 0.05 level of significance, can we conclude that the true mean discharge differs from 7 ounces?		Yes	No

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orchestra answered 2 years ago

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