Question #268476
  1. A random sample of 15 fence posts from a garden center was found to have a mean length of 1.84 m. The population standard deviation for these posts is taken to be 17cm.

(i) Use the t-distribution to find a symmetric 95% confidence interval for the mean length of such posts.

(ii) Interpret the 95% confidence interval found in part (i) above.



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