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STA 2023 Project 4 1) Construct a 95% confidence interval estimate for the population standard deviation, o, of the annual salaries of software engineers if a sample of 14 randomly selected software engineers has a standard deviation of $3725. a) Determine xz and XR b) Write down the formula and the calculate the confidence interval. Follow the proper rounding rules. est the given claims by doing each of the following: a) Identify the null and alternate hypotheses, b) calculate the P-value, c) state whether to reject or fail to reject Ho, d) state the conclusion about the claim