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Q1) A 99% confidence interval (in inches) for mean height of the population is 65.44 < μ < 66.96. This result is based on the sample size of 144. If confidence interval 65.65 < μ < 66.75 is got from the same sample data, find out the degree of confidence?

a) You will first require to determine sample mean and sample standard deviation based on confidence interval given

b) Use value you found in part a to find out degree of confidence for interval 65.65 < μ < 66.75 is based on.

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