Company A wants to demonstrate that their strength data is bigger than 5.0psi. Using statistical inference analysis, answer the following questions:

a.What is the appropriate sample size if the claim is 95% Power with a 95% Confidence Level to detect a difference of 1 standard deviation?

b. What shall be the null and alternative hypotheses for this study?

2.Using the following data from Company A, perform the statistical inference analysis. Is the claim made by Company A true?

Company A

4.68212	5.57371	6.06823	4.43091	4.89606
4.82771	4.42095	2.83554	5.16215	5.31359
5.77393	3.91441	5.91076	5.20465	4.92283