One-way analysis of variance

Reference no: EM1312318

A human factors psychologist studied three computer keyboard designs. Three samples of individuals were given material to type on a particular keyboard, and the number of errors committed by each participant was recorded. The data are as follows:

Keyboard A	Keyboard B	Keyboard C
0	6	6
4	8	5
0	5	9
1	4	4
0	2	6

Are these data sufficient to conclude that three are significant differences in typing performance among the three keyboard designs? Compute a one-way Analysis of variance (ANOVA) to address this research question using a 0.05 significance level.

1. What is your computed answer?

2. What would be the null hypothesis in this study?

3. What would be the alternate hypothesis?

4. What was the critical F value chosen?

5. Is there a significant difference between the groups?

6. Interpret your answer.

Reference no: EM1312318

Questions Cloud

Monetary policies would be appropriate at this time : Illustrate what fiscal policies also monetary policies would be appropriate at this time. You must use at least one article. Use references also APA.

Equilibrium price and quantity for given level of income : Suppose the demand curve for a product is given by Q = 300-2P+4I where 'I' is average income measured in thousands of dollars. The supply curve is Q = 3P - 50.

Theory about cost of debt as well as tax shield in us : Theory about cost of debt as well as tax shield in US and conclusions can you reach analyzing corporate debt capacity

Japans automobile industry improved its productivity : The net result was the Japan's automobile industry improved its productivity throughout this period relative to the US, which generally just kept up with inflation due to its already high rate of accumulated experience also relatively slow growth.

One-way analysis of variance : A human factors psychologist studied three computer keyboard designs.

The mass of the water added to a styrofoam cup : What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.

Quantity of output demanded at every price level : If the quantity of output demanded at every price level increases by $1 trillion, Illustrate what happens to equilibrium output also prices.

Discussing the basics of biochemistry : Specify the potential confounders that have been recognised by the authors? Explain how have they dealt with them at the design stage and at the time of analysis?

Price elasticity of demand and price elasticity of supply : Consider a competitive market for which the quantities demanded and supplied (millions per year) at various prices are given as follows:

User Account

All Pages