100% tevredenheidsgarantie Direct beschikbaar na betaling Zowel online als in PDF Je zit nergens aan vast
Eerder door jou gezocht
MATH 225N Week 7 Assignment- Developing Hypothesis and understanding Possible Conclusion for Proportions () complete solutions - Chamberlain€13,34
In winkelwagen
lectsteph
en
Great work! That's correct.Stuvia.com - The Marketplace to Buy and Sell your Study Material
MATH 225N Week 7 Assignment- Developing Hypothesis and understanding Possible Conclusion for Proportions
Identify the null and alternative hypotheses for an experiment with one population proportion
Question
Devin is a researcher for a pharmaceutical company testing whether a new prescription pain medication causes patients to develop nausea. The medication
would have to be scrapped if more than 6% of patients who take the medication develop nausea on a regular basis. Devin randomly selected 461 patients for a clinical trial of the medication and found that 27 of the patients developed nausea on a regular basis. What are the null and alternative hypotheses for this hypothesis
test?{H0:p=0.06Ha:p>0.06
First verify whether all of the conditions have been met. Let p be the population proportion for patients taking the medication who develop nausea on a regular
basis.
1.Since there are two independent outcomes for each trial, the proportion follows a binomial model.
2.The question states that the sample was collected randomly.
3.The expected number of successes, np=27.66, and the expected number of failures, nq=n(1−p)=433.34 , are both greater than or equal to 5.
Since Devin is trying to determine whether more than 6% of the
patients taking the medication develop nausea on a regular basis, the
null hypothesis is that p is equal to 0.06 and the alternative
hypothesis is that p is greater than 0.06. The null and alternative
hypotheses are shown below. {H0:p=0.06Ha:p>0.06
Compute the value of the test statistic (z-value) for a hypothesis test for proportion
Question
A college professor claims that the proportion of students passing a statistics course is 80%. To test this claim, a random sample of 250 students who previously took the course is taken and it is determined that 221 students passed the course. Stuvia.com - The Marketplace to Buy and Sell your Study Material
The following is the setup for this hypothesis test:
H0:p = 0.80
Ha:p ≠ 0.80
Find the test statistic for this hypothesis test for a proportion and round your answer to 2 decimal places.
The test statistic is calculated as follows:
z=p̂ −p0p0⋅(1−p0)n√
z=0.884−0.800.80⋅(1−0.80)250√
z≈3.32
Compute the value of the test statistic (z-value) for a hypothesis test for proportion
Question
A researcher is investigating a government claim that the unemployment rate is less than 5%. To test this claim, a random sample of 1500 people is taken and its determined that 92 people are unemployed.
The following is the setup for this hypothesis test:
{H0:p=0.05Ha:p<0.05
Find the test statistic for this hypothesis test for a proportion. Round your answer
to 2 decimal places. Test_Statistic=2.01 Great work! That's correct.
Identify the null and alternative hypotheses for an experiment with one population proportion
QuestionWell done! You got it right.
3.32The proportion of successes is p̂ =221250=0.884.
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper TIPSCORE. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €13,34. Je zit daarna nergens aan vast.
