random sample of 36 drivers used on average 749 gallons of gasoline per year if the standard deviation of the population is 32 gallons find the 95% confidence interval for the mean of all the drivers
Added by Joanna A.
Step 1
The sample mean is given as 749 gallons per year. The standard error can be calculated using the formula: SE = σ/√n where σ is the population standard deviation, n is the sample size, and √n is the square root of the sample size. Substituting the given values, Show more…
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