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According to a report in U.S. News from April 2013, the average price of gasoline at all U.S. gas stations was $3.00. Suppose that this

According to a report in U.S. News from April 2013, the average price of gasoline at all U.S. gas stations was $3.00. Suppose that this is also the true average () for current prices. Assume that the population standard deviation () of gas prices is $1.75. Let X be a random variable denoting gas price at gas stations.We plan to take a random sample of 36 gas stations.

The standard error (SE) ofX is

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0.292

29.2

0.049

10.22

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