Question: please work out on paper and write out the parts and formula before plugging in for example (xbar symbol)= 7.1 (sigma symbol) = __ etc.

please work out on paper and write out the parts and formula before plugging in for example (xbar symbol)= 7.1 (sigma symbol) = __ etc. and the formulas to plug into

2. (5 points) Ten randomly selected people were asked how long they slept at night. The mean time was 7.I hours with the standard deviation 0.78 hour. Find a 95% confidence interval of the mean time. Assume the variable is normally distributed

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