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A simple random sample of size 10 has a mean of 69.0 and a sample standard...

A simple random sample of size 10 has a mean of 69.0 and a sample standard deviation of 9.0. A student would like to test the null hypothesis, ?0:?=75.0 , against the alternative, ?1:?<75.0 . Construct a confidence interval corresponding to this test at significance level ?=10% . Give your answer precise to two decimal places. What is the upper and lower limit?

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