I need to justify my answer briefly and show all my calculations if it is needed

ustify your answer briefly and show all calculations where needed. 1 of 3 Lec. Section # 1 As the degrees of freedom increase, the t distribution approaches the a. uniform distribution b. normal distribution c. exponential distribution d. p distribution 2 If the margin of error in an interval estimate of / is 4.6, the interval estimate equals x1 2.3 b. X1 4.6 C. x + 4508 d. x16.9 3. The t distribution is a family of similar probability distributions, with each individual distribution depending on a parameter known as the finite correction factor b. sample size c. degrees of freedom d. standard deviation 4. For the interval estimation of u when o is assumed known, the proper distribution to use is the a. standard normal distribution b. t distribution with n degrees of freedom c. t distribution with n - 1 degrees of freedom d. t distribution with n - 2 degrees of freedom 5. A random sample of 25 employees of a local company has been measured. A 95% confidence interval estimate for the mean systolic blood pressure for all company employees is 123 to 139. Which of the following statements is valid? a. 95% of the sample of employees has a systolic blood pressure between 123 and 139 b. If the sampling procedure were repeated many times randomly and same size, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure. c. 95% of the population of employees has a systolic blood pressure between 123 and 139. d. If the sampling procedure were repeated many times, 95% of the sample means would be between 123 and 139. 6. From a population that is normally distributed with an unknown standard deviation, a sample of 25 elements is selected. For the interval estimation of /, the proper distribution to use is the a. standard normal distribution b. z distribution