The Japanese Nikkei stock index level today is 19,284.The average return of this index over the last 30 years was 6.7%, and this is your best guess for the return next year.The standard deviation of returns over this same period was 25.1%.What is your 95% confidence interval estimate for the Nikkei's levelone year from now?

[8,772 , 25,941]

[9,504 , 26,229]

[10,895 , 30,257]

[12,337 , 27,806]

[15,151 , 27,628]