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Suppose you are told that a 95% confidence interval for the average price of a gallon...

Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from $2.93 to $4.21. Use the fact that the confidence interval for the mean is in the form x − E to x + E to compute the sample mean and the maximal margin of error E. (Round your answers to two decimal places.)

x = $

E = $

math   Statistics-And-Probability   
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Answer #1

Date Guiven conbi denca mterval 2:93 o $421 2:93+4.21 2 E =4-21-357 257-0.sy to 3 S o 61

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