A random sample of the amount paid (in dollars) for taxi fare from downtown to the airport was obtained. (Give your answers correct to two decimal places.) 16 23 18 18 23 18 19 14 18 12 22 23 23 14 13 (a) Use the data to find a point estimate for the mean. 18.27 (b) Use the data to find a point estimate for the variance. (c) Use the data to find a point estimate for the standard deviation.

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