A random sample of the amount paid (in dollars) for taxi fare from downtown to the...

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A random sample of the amount paid (in dollars) for taxi fare from downtown to the...

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.)

18

21

19

18

13

20

15

23

14

21

18

19

22

18

(a) Use the data to find a point estimate for the mean.

(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.

math Statistics-And-Probability

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Answer 1

Answer #1

(c) The formula for calculating the point estimate of the standard devi ati on is 15 Σ(18-18.4666が4(21-18.46667) + 4(18-18.46667) 15-סו (0.217781+6.417761+0.217781) 15-1 (1 1 1.7333) 1 14 980952 2.825058 2.83 approxim ately s, 2 83 Therefore, the point estimate of the stan dard deviation is is

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Answer 2

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