Question: Help solving Thanks Show work Problem #3: To estimate the average caffeine content of instant coffee, a researcher randomly selected 12 brands and calculate the

Help solving Thanks Show work Problem #3: To estimate the average

Help solving Thanks Show work

Problem #3: To estimate the average caffeine content of instant coffee, a researcher randomly selected 12 brands and calculate the average to be 125.42 mg with a sample standard deviation of 50.34 mg. If a normal distribution can be assumed for the average caffeine content, construct a 95% condence interval to verify if the data supports the claim that the average caffeine content of instant coffee is 115 mg

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