Explain hypothesis test, Basic Statistics

Assignment Help:

Oprah Winfrey endorsed Barack Obama in the Democratic presidential primary. Does Oprah's endorsement make a difference? If so, we would expect support for Obama to be higher among people who watch Oprah regularly than among people who don't. The table below gives data on watching Oprah and support for Barack Obama among a random sample of the U.S. population.

a)  Is there any evidence that Oprah's endorsement makes a difference (answer this part without conducting a hypothesis test)? Justify your answer by computing appropriate statistics.

b)  If there does appear to be an association between watching Oprah and supporting Obama, is this association statistically significant at the .05 level? Show all work.

 

 

Supports Obama?

 

 

Yes

No

Watches Oprah?

Yes

150

120

No

200

230

 

 


Related Discussions:- Explain hypothesis test

What is hurdle rate, What is hurdle rate? In investment spending budget...

What is hurdle rate? In investment spending budget, challenge amount is the minimal amount that an organization desires to earn when getting a venture. Hence the challenge amou

Distribution values, find a distribution with 10 values between 0 and 10 th...

find a distribution with 10 values between 0 and 10 that has as large a variance as possible

Probability, What is the probability 0.10 called?

What is the probability 0.10 called?

Simple arithamatic mean, following the hight of studen 155,153,168,160,162...

following the hight of studen 155,153,168,160,162,166,167,180,257,165,

IET 3339, 1. If each sample taken has 500 units, and the average proportio...

1. If each sample taken has 500 units, and the average proportion nonconforming is 0.034, what is the upper and lower control limits for the p-chart? 2. If you sample 450 parts

Aggressive growth fund, Define Aggressive Growth Fund: A mutual fund which ...

Define Aggressive Growth Fund: A mutual fund which is primary investment intention is substantial capital gains. The return & principal value of mutual funds fluctuate with changes

Question, #quea national poll of 1836 respondents indicated that 36% suppor...

#quea national poll of 1836 respondents indicated that 36% support the NDP. Test whether this is sufficient evidence to show that the NDP support has increased since the election.

Histogram, difference betwen histogram and historigram

difference betwen histogram and historigram

The value of its common stock, The Washington Corp stock has a β of 1.15 an...

The Washington Corp stock has a β of 1.15 and it will pay a dividend of $2.50 next year. The expected rate of return of the market is 17% and the current riskless rate is 9%. The e

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd