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Grain is fortified with vitamins at the factory when processed. But, before the product reaches the consumer, some of the vitamins may degrade due to time, heat during storage, etc. Suppose the vitamin contents (in milligrams per pound) of five bags of grain are measured at the factory before shipping, and then again at the retail store after shipping. The results are as shown:

We wish to test whether there is a statistically significant decrease in vitamin content after shipping.

Question 3
Select one answer.
10 pointsGiven the design of the study and the question of interest, which of the following 4 computer outputs is relevant to use?




  • STAT (incomplete) - ,

    What results?

  • STAT - ,

    It is A, I just did the problem for STATS, a paired t-test and CI before and after shipping 95% CI with lower bound for mean difference

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