A food company wishes to determine whether a newly designed potato chip bag increases the length of time a bag of chips remains fresh on the grocery shelf. A random sample of potato chips with the old design of the bag was compared to a random sample of potato chips with the new bag. Summary statistics pertaining to the number of days the chips remained fresh are given below. At a 95% level of confidence (α = .05), the company wishes to investigate if the new bag has an increased freshness time over the old bag.

	New Bag (Group 1)	Old Bag (Group 2)	Difference (New-Old)
Sample Size	35	40	-5
Sample Mean	21.2	20.8	0.4
Sample Std. Deviation	2.5	2.8	0.3

What is the Conclusion of this study?

		At a 95% level of confidence, there is sufficient evidence that the new bag has an increased freshness time over the old bag.
		At a 95% level of confidence, there is insufficient evidence that new bag has an increased freshness time over the old bag.
		At a 95% level of confidence, there is sufficient evidence that new bag has a different mean freshness time than the old bag.
		At a 95% level of confidence, there is insufficient evidence that new bag has a different mean freshness time than the old bag.

Answer rating: 100% (QA)

1 Mull hypothesis Ho 4 44 ienew bag has an not increased freshness time ... View the full answer