Send data to calculator Send data to Excel (to) Are the two run samples independent or paired (dependent) samples? Choose the best answer. independent samples O paired (dependent) samples X S U (b) Jenny wants to use the data to determine if the mean drive time on the San Bernardino Freeway is less than the mean drive time on the Pomona Freeway. She assumes that both populations follow approximately a normal distribution and that the population variances are equal. OZ= 0 o you O It is not clear which test statistic to use. Choose the appropriate test statistic to perform the hypothesis test. Then calculate that statistic. Carry intermediate calculations to three or more decimal places. Round your answer to three decimal places. (If necessary, you can refer to a list of formulas.) X S
Send data to calculator Send data to Excel (to) Are the two run samples independent or paired (dependent) samples? Choose the best answer. independent samples O paired (dependent) samples X S U (b) Jenny wants to use the data to determine if the mean drive time on the San Bernardino Freeway is less than the mean drive time on the Pomona Freeway. She assumes that both populations follow approximately a normal distribution and that the population variances are equal. OZ= 0 o you O It is not clear which test statistic to use. Choose the appropriate test statistic to perform the hypothesis test. Then calculate that statistic. Carry intermediate calculations to three or more decimal places. Round your answer to three decimal places. (If necessary, you can refer to a list of formulas.) X S
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:Jenny has two ways to get from her home in Norco to her office in Los Angeles. One is on the San Bernardino Freeway and the other on the Pomona Freeway.
Recently, she added a lane to the San Bernardino Freeway. Jenny wants to determine if it is now faster to take the San Bernardino Freeway than the Pomona
Freeway. She selected a random sample offiftfettheir drives on the San Bernardino Freeway and a random sample offiftefenis trips on the Pomona Freeway. The
two samples were chosen separately, so the selection of the San Bernardino Freeway trips did not affect the selection of the Pomona Freeway trips. Jenny
recorded the runs (in minutes) on each of the two samples. The following table provides the data, the sample means, and the sample standard deviations.
SB Expressway 62, 75, 79, 76, 69, 73, 68, 63, 65, 61, 64, 70, 60, 71, 63
pomona highway 77, 79, 65, 75, 79, 72, 66, 80, 72, 68, 71, 65, 80, 77, 71
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tours in minutes
independent samples
(to) Are the two run samples independent or paired (dependent) samples? Choose the best answer.
paired (dependent) samples
X
sample mean sample standard deviation
3
67.9
73.1
6.0
5.5
(b) Jenny wants to use the data to determine if the mean drive time on the San Bernardino Freeway is less than the mean drive time on the Pomona
Freeway. She assumes that both populations follow approximately a normal distribution and that the population variances are equal.
Choose the appropriate test statistic to perform the hypothesis test. Then calculate that statistic. Carry intermediate calculations to three or more
decimal places. Round your answer to three decimal places. (If necessary, you can refer to a list of formulas.)
Transcribed Image Text:pomona mynway
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Send data to Excel
(to) Are the two run samples independent or paired (dependent) samples? Choose the best answer.
independent samples
paired (dependent) samples
X
Z =
(b) Jenny wants to use the data to determine if the mean drive time on the San Bernardino Freeway is less than the mean drive time on the Pomona
Freeway. She assumes that both populations follow approximately a normal distribution and that the population variances are equal.
Ś
Choose the appropriate test statistic to perform the hypothesis test. Then calculate that statistic. Carry intermediate calculations to three or more
decimal places. Round your answer to three decimal places. (If necessary, you can refer to a list of formulas .)
you
O It is not clear which test statistic to use.
X
Ś
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