For a data set obtained from a sample, n= 100 and x = 46.25. It is known that o = 4.8. (a) What is the point estimate of u? p=| 46.25 (b) Find a corresponding to a 95% confidence level. 1.96% (c) Find 1 - a/2. 1- a/2 = 55,168 (d) Find to 2 decimal places za/2 for 95% confidence level. Za/2 09.408

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