please solve again correctly. what you gave me is wrong. I have them written for

Question

please solve again correctly. what you gave me is wrong. I have them written for you

HWIll sec 7.2 Corp Previous 1 2 3 Next Question 4 of 5 (1 point) 7.2 Section Exercise 11 A sample of 8 adult elephants had an average weight of 12,791 pounds. The standard deviation for the sample was 26 pounds. Find the 95% confidence interval of the population mean for the weights of adult elephants. Assume the variable is normally distributed. Round intermediate answers to at least three decimal places. Round your final answers to the nearest whole number. Check Answer Solve It 12770 |

Explanation / Answer

n = 8

X bar = 12791

s = 26

T score for 95% confidence interval = t0.025,7 = 2.365

Confidence interval = (X bar + t0.025,7 * s / sqrt(n))

= (12791 + 2.365 * 26/sqrt(8))

= (12791 + 21.740)

= (12769, 12813)

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