Score: 1 of 1 pt 13 of 15 HW Score: 8.. Section 13.6 Exercise 18 EQuestion Help

Question

Score: 1 of 1 pt 13 of 15 HW Score: 8.. Section 13.6 Exercise 18 EQuestion Help For each of the following scenarios, say whether the data should be treated as s independent or paired samples. Explain briefly. If paired, explain what the pairing involves. Complete parts a through c. a) An efficiency expert claims that a new ergonomic desk chair makes typing at a computer terminal easier and faster. To test it, 40 volunteers are selected. Half of the volunteers will use the new chair and half will use their old chairs. Each volunteer types a randomly selected passage for 2 minutes and the number of correct words typed is recorded Choose the correct answer belov 0 A. The data are paired where the pairing involves the volunteers who use the new chair and the volunteers who use their old chair The data are independent and not paired The data are paired where the pairing involves the random passages the volunteers type. B. C. ary to select your answer and then click Check Answer

Explanation / Answer

Paired samples (also called dependent samples) are samples in which natural ormatched couplings occur. This generates a data set in which each data point in onesample is uniquely paired to a data point in the second sample.

But here volunteers are divided in two sample and each volunteer types a randomly selected passage for 2 minutes. Hence they are not paired but independent

Hence answer is B. The data are independent and not paired

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