Give a point estimate for the mean time required to commute

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Reference no: EM13811034

Each student in a sample of 10 was asked for the distance and the time required to commute to college yesterday. The data collected are shown in the table.

1	3	4	5	7	8	10	11	11	12
5	10	10	10	15	15	25	15	20	25

Given an equation for the line of best fit of = 3.78 + 1.56x, s_e² = 10.0826, Σx = 72, and SS(x) = 131.6, make the following estimates.

(a) Give a point estimate for the mean time required to commute 4 miles. (Give your answer correct to two decimal places.)

(b) Give a 90% confidence interval for the mean travel time required to commute 4 miles. (Give your answers correct to two decimal places.)

lower limit
upper limit

(c) Give a 90% prediction interval for the travel time required for one person to commute the 4 miles. (Give your answers correct to two decimal places.)

lower limit
upper limit

Reference no: EM13811034

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