Independent sample t-test for eating speed

Assignment Help Basic Statistics

Reference no: EM13106931

Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal-weight individuals. To test this hypothesis, she has two assistants sit in a McDonald's restaurant and identify individuals who order the Big Mac special for lunch. The Big Mackers as they become known are then classified by the assistants as overweight, normal weight, or neither overweight nor normal weight. The assistants identify 10 overweight and 10 normal weight Big Mackers. The assistants record the amount of time it takes them to eight the Big Mac special.

1.0 585.0

1.0 540.0

1.0 660.0

1.0 571.0

1.0 584.0

1.0 653.0

1.0 574.0

1.0 569.0

1.0 619.0

1.0 535.0

2.0 697.0

2.0 782.0

2.0 587.0

2.0 675.0

2.0 635.0

2.0 672.0

2.0 606.0

2.0 789.0

2.0 806.0

2.0 600.0

a) Compute an independent-samples t-test on these data. Report the t-value and the p values. Where the results significant? (Do the same thing you did for the t-test above, only this type when you go to compare means, click on independent samples t-test. When you enter group variable into grouping variable area, it will ask you to define the variables. Click define groups and place the number 1 into 1 and the number 2 into 2).

b) What is the difference between the mean of the two groups? What is the difference is standard deviation?

c) What is the null and alternative hypothesis? Do the data results lead you to reject or fail to reject the null hypothesis?

d) What do the results tell you?

Reference no: EM13106931

Questions Cloud

Examples of z and t-tests : Explain and give an example of: z-tests, t-tests, single sample t-tests, a dependent sample t-test, or an independent sample t-test.

Express two business sectors you might want to work : Express two business sectors you might want to work in if you were an accountant and explain why in 150 to 200 words. Research a specific Industry in one of the business sectors that interests you and Express how you imagine it might be to work the..

What is the maximum height : A baseball player hits a ball at 49.2m/s at an angle of 29.0 degrees above the horizontal. The outfield bleachers are 145 m away from the home plate.

Discuss the advantages of the using groups to make decisions : The CEO of your organization has developed two potential plans to help the organization cut costs. The CEO has asked you to form a group; the members of the group are to represent a cross-section of all the departments within the organization.

Independent sample t-test for eating speed : Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal-weight individuals. To test this hypothesis, she has two assistants sit in a McDonald's restaurant and identify individuals who order the Big Mac speci..

Avoid the use of overtime and to keep her employees fresh : In order to avoid the use of overtime and to keep her employees fresh, Joan decided to have employees work four ten-hour shifts each week. She insists that every employee must have three consecutive days off.

How many repetitions of the diffusion pathways : Uranium has two naturally occurring isotopes. U238 (atomic mass 238.0508 u) has a natural abundance of 99.275% and U235 (atomic mass 235.0439 u) has an abundance of 0.720%.

Behaviors of social dominance nfluence evolutionary process : How do different behaviors of social dominance and courtship display influence evolutionary process? What other behaviors might have the influence on evolution?

Comparison of two means-t-test : One of the most commonly used statistical techniques is the comparison of two means, also known as the t-test (for this you need quantitative, or interval level data).

User Account

All Pages