Conduct a one-tailed test

Assignment Help Basic Statistics

Reference no: EM131798660

In the United States, baseball has always been a favorite pastime and is rife with statistics and theories. While baseball purists may disagree, to an applied statistician no topic in baseball is too small or hypothesis too unlikely. In a recent paper, researchers at Wayne State University showed that major-league players who have nicknames live 21/2 years longer than those without them (The Wall Street Journal, July 16, 2009). Perhaps nicknames add to the self-esteem of a player. Consider the following portion of data on the lifespan (years) of a player and a nickname dummy that equals 1 if the player had a nickname and 0 otherwise; the complete data set can be found on the text website, labeled Nicknames

Years	Nickname
74	1
62	1
.....	.....
64	0

a. Create two subsamples, with one consisting of players with a nickname and the other one without a nickname. Calculate the average longevity for each subsample.

b. Estimate a linear regression model of Years on the Nickname dummy variable. Compute the predicted longevity of players with and without a nickname.

c. Conduct a one-tailed test at a 5% level to determine if players with a nickname live longer.

Reference no: EM131798660

Questions Cloud

What activity need to be identified and performed right now : What activities need to be identified and performed right now? How might procurement-related activities involve managing stakeholder engagement?

Find the rate of change of quantity with respect to price : Suppose the demand function for a product is given by (p + 12q) = 10,000, where p is the price and q is the quantity.

Find the elasticity of demand : Find the elasticity of demand at p = 30. If the price is raised to $31, does revenue increase or decrease ?

Discuss what type of fraud is barbara committing : What is the difference between fraud committed by employees and fraud committed by managers

Conduct a one-tailed test : Conduct a one-tailed test at a 5% level to determine if players with a nickname live longer.

Explain how you would establish credibility : A profile of your audience/s. Why are these audience/s important? How different would you approach each audience? Explain how you would establish credibility.

Find the rate of change of atmospheric pressure : Atmospheric pressure the rate of change of atmospheric pressure P with respect to the altitude above sea level h is proportional to the pressure.

Compute the crosses total itemized deductions : The Crosses' AGI for 2013 is $214,540. Compute the Crosses' total itemized deductions and prepare their Schedule A

Predicted score for a male student : Compute the predicted score for a male student with a GPA of 3.5. Repeat the analysis for a female student.

User Account

All Pages