Question: Any idea? 9.35 A random sample of size n1 = 25, taken from a normal population with a standard deviation 01 = 5, has a

Any idea?

9.35 A random sample of size n1 = 25, taken from a normal population with a standard deviation 01 = 5, has a mean $1= 80. A second random sample of size na = 36, taken from a different normal population with a standard deviation 02 = 3, has a mean $2 = 75. Find a 94% confidence interval for #1 - /2

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