Question: Can someone please help me understand how to u se a standard normal table to find the positive critical value that corresponds to a tail

Can someone please help me understand how to use a standard normal table to find the positive critical value that corresponds to a tail area of 0.025. Explain how I use a standard normal table please.

Construct the confidence interval for the population mean mu.

c= 0.95 x=3.8 a=0.7 and n=63

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