Question

The nutrition label for a new barbecue sauce states that one bottle of sauce has 640⁢mg of sodium. A local consumer group claims that the sodium content is higher than what is reported on the label. To determine the accuracy of the label, the FDA randomly selects 12 bottles of the sauce and determines the sodium content. Is there sufficient evidence to support the local consumer group’s claim that the sodium content is higher than the nutrition label states? Assume the data are normally distributed and use a significance level of 0.05.

Sodium Content (in mg)
638   660   665   665   630   646
644   663   623   649   646   624

Step 2 of 3 :  

Compute the value of the test statistic. Round your answer to three decimal places.

Answer 1