Posted by **ryan** on Friday, August 2, 2013 at 12:44am.

A machine is designed to fill jars with 16 ounces of coffee. A consumer suspects that the machine is not filling the jars completely. A sample of 8 jars has a mean of 15.6 ounces and a standard deviation of 0.3 ounce. Is there enough evidence to support the consumer's conjecture at alpha = 0.05? Second, calculate the critical value and degrees of freedom.

- statistics -
**Anonymous**, Friday, August 2, 2013 at 1:31am
Yes there is enough evidence to support----

T = (16-15.6)/(.3/sqrt(8))

df = n-1

df = 8-1 = 7

critical t value = 1.895

- statistics -
**Chol**, Friday, August 2, 2013 at 1:32am
Yes there is enough evidence to support----

T = (16-15.6)/(.3/sqrt(8))

df = n-1

df = 8-1 = 7

critical t value = 1.895

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