(Answered) In a survey conducted in 2003 the counts who smoked were 48

Statistics

In a survey conducted in 2003, the counts who smoked were 48 of 282 females (sample proportion 0.17), and 37 of 164 males (sample proportion 0.23). The pooled sample proportion was (48 + 37)/(282 + 164) = 0.19. Carry out a two-sided z test by hand to see if the difference in proportions who smoked between males and females was significant:

a. First calculate z, the standardized difference between sample proportions.

b. What can we say about the size of the P-value?

c. Was the difference significant?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92646433
Price:- $15

Verified Expert

Priced at $30 Now at $15, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A firm evaluates all of its projects by applying the irr

A firm evaluates all of its projects by applying the IRR rule. Year Cash Flow 0 -$ 153,000 1 78,000 2 67,000 3 49,000 What is the project's IRR? If the required return is 11 percent, should the firm accept the project? Y ...

In a specific sample size of 100 what is the range within

In a specific sample size of 100, what is the range within the groups average iron level would be considered ususal? Using the Central Limit Theorem and the Empirical Rule

Lt x be a normally distributed random variable with mu

Let X be a normally distributed random variable with μ = 100 and σ = 10. Find the probability that X is between 80 and 105. (Round your answer to the nearest whole number percent and include the percent symbol.)

Your friend randomly chooses a square picture frame from

Your friend randomly chooses a square picture frame from the store. Let X be the height in inches of the picture frame. Based on your knowledge of the square picture frames at the store, you know that the expected height ...

What are the ways that it can help comply with legal

What are the ways that IT can help comply with legal requirements and social responsibilities surrounding the sales of alcohol?

A chemical company is interviewing two people to become its

A chemical company is interviewing two people to become its risk manager. One has a background of management positions chemical refineries. The other has a background providing risk management consulting services to depa ...

An investment costs 60096 and offers a return of 10 percent

An investment costs $60,096 and offers a return of 10 percent annually for ten years. What are the annual cash inflows anticipated from this investment? Use Appendix D to answer the question. Round your answer to the nea ...

The number of people arriving for treatment at an emergency

The number of people arriving for treatment at an emergency room can be modeled by a Poisson process with a mean of 7 people per hour. How many people do you expect to arrive during a 55-minute period?

A manufacturer of matches randomly and independently puts

A manufacturer of matches randomly and independently puts 15 matches in each box of matches produced. The company knows that one-tenth of 6 percent of the matches are flawed. What is the probability that a matchbox will ...

A researcher reports that the size of an effect in

A researcher reports that the size of an effect in Population A is d = 0.10 and the effect size in Population B is d = 0.34. Which population is associated with greater power to detect an effect? A) Population A B) Popul ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert