Difference of population means-paired comparisons

Reference no: EM13112218

Hypothesis test for the difference of population means: Paired comparisons

A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Assembly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random sample of 8 workers and timing each worker on each assembly process. Half of the workers are chosen at random to use Process 1 first, and the rest use Process 2 first. For each worker and each process, the assembly time (in minutes) is recorded, as shown in Table 1.

Worker Process 1 Process 2 Difference

1 79 61 18

2 64 60 4

3 68 50 18

4 77 71 6

5 48 25 23

6 62 42 20

7 87 84 3

8 74 65 9

Based on these data, can the company conclude, at the 0.10 level of significance, that the mean assembly times for the two processes differ? Answer this question by performing a hypothesis test. Perform a two-tailed test and answer the questions below.

Reference no: EM13112218

Questions Cloud

Determine least squares estimators for second model : Determine the least squares estimators γ and δ for this second model associated to corresponding LS estimators α and β of first model?

Question about softened and hard water : You are the Science Officer on the Starship Enterprise and you come across a new planet. You find that no light with wavelength less than about 650 nm reaches the surface of the planet.

Bell curve-standard deviation-statistical significance : In a research study, what does statistically significant mean? How are decisions made on data based on significance? What do you do with data that is not significantly different?

Why eh&s and fs professionals avoid inhaling smoke : Why should EH&S and FS professionals avoid inhaling the smoke produced when tar paper and roofing shingles smolder and burn?

Difference of population means-paired comparisons : A personal computer manufacturer is interested in comparing assembly times for two keyboard assembly processes. Assembly times can vary considerably from worker to worker, and the company decides to eliminate this effect by selecting a random samp..

What are the functions of each of these organelles : Name the two organelles (one in animal cells and one in plant cells) that have their own DNA that are NOT located in the nucleus.

Balanced chemical equation using the lowest possible : Write the balanced chemical equation using the lowest possible whole number coefficients for Fe2O3+2Al = 2Fe+Al2O3.

Assumptions necessary of use the t-series test : What are the assumptions necessary to use the z-series test? What are the assumptions necessary of use the t-series test?

Find gamete receives no copies of that chromosome is called : The malfunction in meiosis where one gamete received two copies of a particular chromosome and the other gamete receives no copies of that chromosome is called?

User Account

All Pages