A fast food restaurant executive wishes to know how many fast food meals teenagers eat each week. They want to construct a 80 % confidence interval for the mean and are assuming that the population standard deviation for the number of fast food meals consumed each week is 1.4. The study found that for a sample of 566 teenagers the mean number of fast food meals consumed per week is 5.8. Construct the desired confidence interval. Round your answers to one decimal place.

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