Question

You just bought a 48 pack of Mello Yello's and your statistical curiosity is up. You...

You just bought a 48 pack of Mello Yello's and your statistical curiosity is up. You decide to test the hypothesis that the average amount of soda in each can is 12 ounces. After measuring the amount in each can, the sample mean is 11.8 ounces with a standard deviation of 2.5 ounces. What is the test statistic for this test?

Math   Statistics-And-Probability   
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Answer #1

Solution :

This is the two tailed test .

The null and alternative hypothesis is ,

H0 :   =12

Ha : 12

Test statistic = z

= ( - ) / / n

= (11.8-12) / 2.5/ 48

Test statistic = -0.5543

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