A community for students.
Here's the question you clicked on:
 0 viewing
KonradZuse
 4 years ago
In 1965, about 44% of the U.S. adult population had never smoked cigarettes. A national health survey of 1205 U.S. adults (presumably selected randomly) during 2006 revealed that 615 had never smoked cigarettes.
Reference: Ref 185
Suppose you wished to test whether there has been a change since 1965 in the proportion of U.S. adults that have never smoked cigarettes. Which of the following are the appropriate hypotheses?
A. H0: p = 0.44, Ha: p > 0.44
B. H0: p = 0.51, Ha: p 0.51
C. H0: p = 0.44, Ha: p 0.44
D. H0: = 0.44, Ha: 0.44
The Pvalue of the test of hypotheses is
A. greater than 0.10.
B. between 0.05 and 0.10.
C. between .01 and 0.05.
D. below 0.01.
KonradZuse
 4 years ago
In 1965, about 44% of the U.S. adult population had never smoked cigarettes. A national health survey of 1205 U.S. adults (presumably selected randomly) during 2006 revealed that 615 had never smoked cigarettes. Reference: Ref 185 Suppose you wished to test whether there has been a change since 1965 in the proportion of U.S. adults that have never smoked cigarettes. Which of the following are the appropriate hypotheses? A. H0: p = 0.44, Ha: p > 0.44 B. H0: p = 0.51, Ha: p 0.51 C. H0: p = 0.44, Ha: p 0.44 D. H0: = 0.44, Ha: 0.44 The Pvalue of the test of hypotheses is A. greater than 0.10. B. between 0.05 and 0.10. C. between .01 and 0.05. D. below 0.01.

This Question is Closed

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1what did you get for the first part

KonradZuse
 4 years ago
Best ResponseYou've already chosen the best response.0I forgot to mention that there was a misprint when I pasted.. B is not equal, same with C, and then there is a p ^ for both of D's answers... I think it's B....

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1D is out because you're not testing p^, you're testing p

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1how are you getting 51% ? the given percentage is 44%

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1oh i see, you divided 615/1205 = 0.51, but that's p^ and NOT p

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1you did eh? lol yeah C is correct

KonradZuse
 4 years ago
Best ResponseYou've already chosen the best response.0Haha I glanced over them didn't realize that there were 2 of the same haha... I wanted the one that was not equal :D.

KonradZuse
 4 years ago
Best ResponseYou've already chosen the best response.0Would the next part be B?

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1you first need to find the test statistic

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1use the formula z = (m  p)/(sqrt(pq/n)) where m is the test statistic and q = 1p z = (m  p)/(sqrt(pq/n)) z = (0.51037  0.44)/(sqrt(0.44*0.56/1205)) z = 4.92108 So the test statistic is z = 4.92108

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1now you need to find P(z > 4.92108) and double this result

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1you can get away without even using a calculator though because notice how far z = 4.92108 is from z = 0

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1so what's the p value

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1what did you get for the pvalue, which numeric value did you get

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1calculate P(z > 4.92108), what do you get

KonradZuse
 4 years ago
Best ResponseYou've already chosen the best response.0How do we calculate that again without the table?

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1type normalcdf(4.92108, 10) into wolfram alpha

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1or you can use a TI calculator to do the same thing

KonradZuse
 4 years ago
Best ResponseYou've already chosen the best response.0hm.... Now the le end poin is almos 5, but the oher bnumbers are super tiny

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1so that means what

KonradZuse
 4 years ago
Best ResponseYou've already chosen the best response.0Well like I said I wasn't sre if it was the 5 or tiny #'s.. So D then :)

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1well the p value is very very small, so it has to be less than 0.01

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1the p value is the 4th value down

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1well you double it first, but still, it's very small
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.