Question: 28. Based on this scenario, determine whether you use a z- statistic, neither, or both, to form a 95% confidence interval. Random sample of n=

28. Based on this scenario, determine whether you use a z- statistic, neither, or both, to form a 95% confidence interval. Random sample of n= 10 from a normal distribution with unknown mean Ir and standard deviation s=5 a. Z-statistic b. Both c. T- statistic d. Neither

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