Question

Hello, please answer with either formula or preferably with TI-84 ONLY. (No r studio, etc) thanks!

19. The data below are annual high values of Dow Jones Industrial Average and annual mean sunspot numbers for eight recent years. A sunspot number is a measure of sunspots or groups of sunspots on the surface of the sun. The Dow Jones Industrial Average is a commonly used index that is a weighted mean calculated from different stock values.

(a) Use a 0.05 significance level to test for a linear correlation between the Dow Jones Industrial Average and the sunspot numbers.

Dow Jones Industrial Average	14,198	13,338	10,606	11,625	12,929	13,589	16,577	18,054
Sunspot Number	7.5	2.9	3.1	16.5	55.7	57.6	64.7	79.3

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Test Statistics: r ≈___________ and t ≈ ___________

P-value = Reject ??. OR Fail to reject ??. (Circle one)

Final Conclusion:

(b) Find the best predicted value of the sunspot number when the Dow Jones Industrial Average reaches 15,276. Round answer to the nearest tenth.

Answer 1

Solution:

(a)

(b)