Question

The following two-way table of counts summarizes whether respondents smoked or not and whether they have...

The following two-way table of counts summarizes whether respondents smoked or not and whether they have had ever divorced or not for persons who had ever been married.

Ever Divorced?
Smoke? Yes No
Yes 290 204
No 436 455

Among those who smoked, what percentage has ever been divorced? [Answer to 2 decimal places. Do not type % symbol in the box.]  %

Tries 0/5

Among those who has ever been divorced, what percentage smoked? [Answer to 2 decimal places. Do not type % symbol in the box.]  %

Tries 0/5

Next we intend to test if smoking habits and being divorced are related or not.
What is the expected frequency of smoker and ever being divorced? [Answer to 2 decimal places.]

Tries 0/5

What is the expected frequency of smoker and never being divorced? [Answer to 2 decimal places.]

Tries 0/5

What is the expected frequency of non-smoker and ever being divorced? [Answer to 2 decimal places.]

Tries 0/5

What is the expected frequency of non-smoker and never being divorced? [Answer to 2 decimal places.]

Tries 0/5

To test independence between smoking habits and being divorced, what is the value of chi-square test statistic? [Answer to 3 decimal places.]

Tries 0/5

Suppose we are testing:

Null hypothesis: smoking habit and ever being divorced are not related,
against
Alternative hypothesis: smoking habit and ever being divorced are related.

If the p-value associated to the ch-square test-statistics is 0 and the level of significance is 5%, what will be your conclusion?
Do not reject null hypothesis
Not enough information to reach a decision
Reject null hypothesis

Tries 0/2

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The table summarizes data on smoking status and perceived risk of smoking and is consistent with...
The table summarizes data on smoking status and perceived risk of smoking and is consistent with summary quantities obtained in a Gallup Poll conducted in November 2002. Assume that it is reasonable to consider these data as representative of the U.S. adult population. Perceived Risk Smoking Status Very Harmful Somewhat Harmful Not Too Harmful Not at All Harmful Current Smoker 57 33 5 1 Former Smoker 65 17 3 2 Never Smoked 83 9 2 1 (a) What is the...
A researcher records whether n=280n=280 children do or do not have asthma at age 13, and...
A researcher records whether n=280n=280 children do or do not have asthma at age 13, and then again records whether these same 280280 individuals have asthma 7 years later. Results are shown in the following table: Asthma at age 20? Asthma at age 13? Yes No Yes 85 17 No 5 173 1. What is the expected frequency of "asthma at 13" and "asthma at 20"? [Answer to 2 decimal places.] 2. What is the expected frequency of "asthma at...
A researcher records whether n = 247 children do or do not have asthma at age...
A researcher records whether n = 247 children do or do not have asthma at age 13, and then again records whether these same 247 individuals have asthma 7 years later. Results are shown in the following table: Asthma at age 20? Asthma at age 13? Yes No Yes 55 16 No 12 164 1. What is the expected frequency of "asthma at 13" and "asthma at 20"? [Answer to 2 decimal places.] 2. What is the expected frequency of...
A researcher is interested in whether the number of years of formal education is related to...
A researcher is interested in whether the number of years of formal education is related to a person's decision to never smoke, continue to smoke, or quit smoking cigarettes. The data below represent the smoking status by level of education for residents of the United States 18 years or older from a random sample of 400 residents. Round all numeric answers to four decimal places. Smoking Status Education Level Current Former Never Less than high school 36 18 34 High...
A researcher is interested in whether the number of years of formal education is related to...
A researcher is interested in whether the number of years of formal education is related to a person's decision to never smoke, continue to smoke, or quit smoking cigarettes. The data below represent the smoking status by level of education for residents of the United States 18 years or older from a random sample of 300 residents. Round all numeric answers to four decimal places. Smoking Status Education Level Current Former Never Less than high school 26 14 26 High...
A die is suspected of being biased. It is rolled 24 times with the following results:...
A die is suspected of being biased. It is rolled 24 times with the following results: Outcome 1 2 3 4 5 6 Total Outcome Probability 1/6 1/6 1/6 1/6 1/6 1/6 1 Expected Frequency A B C D E F 24 Observed Frequency 8 4 1 8 3 0 24 1) Conduct a significance test at a significant level of 5% to see if the die is biased. A die is not biased if the probability of each of...
A commuter must pass through five traffic lights on her way to work and will have...
A commuter must pass through five traffic lights on her way to work and will have to stop at each one that is red. She estimates the probability model for the number of red lights she hits (xx), as shown below: xx 0 1 2 3 4 5 p(x)p(x) 0.03 0.15 pp 0.11 0.1 0.07 Find the probability that she hits at most 3 red lights. Answer to 2 decimal places. Incorrect. Tries 1/5 Previous Tries Find the probability that...
The marital status distribution of the U.S. male population, age 15 and older, is as shown...
The marital status distribution of the U.S. male population, age 15 and older, is as shown below. Marital Status Percent never married 31.3 married 56.1 widowed 2.5 divorced/separated 10.1 Suppose that a random sample of 400 U.S. young adult males, 18 to 24 years old, yielded the following frequency distribution. We are interested in whether this age group of males fits the distribution of the U.S. adult population at the 5% level. Calculate the frequency one would expect when surveying...
A die is suspected of being biased. It is rolled 24 times with the following results:...
A die is suspected of being biased. It is rolled 24 times with the following results: Outcome 1 2 3 4 5 6 Total Outcome Probability 1/6 1/6 1/6 1/6 1/6 1/6 1 Expected Frequency A B C D E F 24 Observed Frequency 8 4 1 8 3 0 24 Conduct a significance test at a significant level of 5% to see if the die is biased. A die is not biased if the probability of each of the...
A program for generating random numbers on a computer is to be tested. The program is...
A program for generating random numbers on a computer is to be tested. The program is instructed to generate 100 single-digit integers between 0 and 9. The frequencies of the observed integers were as follows. At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly? Integer 0 1 2 3 4 5 6 7 8 9 Frequency 12 9 8 5 11 13 8 8 14 12 (a) Find the...