Question

In: Statistics and Probability

         A group of researchers wants to determine if Caucasians and African-Americans are equally likely to...

         A group of researchers wants to determine if Caucasians and African-Americans are equally likely to inherit cystic fibrosis (CF). They collect data on cystic fibrosis (yes/no) and calculate frequencies for each group. They collected data from 820 people overall. They observed the following frequencies: White-YesCF (80), White-NoCF (430), Black-YesCF (16), Black-NoCF (294). Use a two-variable chi-square analysis (where α = .01) to determine if there are significant differences in cystic fibrosis by race.

  

        13.  Are there statistically significant differences in cystic fibrosis by race? (Yes/No)

        14.  Calculate Cramer’s phi (ϕ2) for the effect of race on cystic fibrosis

Solutions

Expert Solution


orchestra answered 2 years ago
Next > < Previous

Related Solutions

         A group of researchers wants to determine if Caucasians and African-Americans are equally likely to...
         A group of researchers wants to determine if Caucasians and African-Americans are equally likely to inherit cystic fibrosis (CF). They collect data on cystic fibrosis (yes/no) and calculate frequencies for each group. They collected data from 820 people overall. They observed the following frequencies: White-YesCF (80), White-NoCF (430), Black-YesCF (16), Black-NoCF (294). Use a two-variable chi-square analysis (where α = .01) to determine if there are significant differences in cystic fibrosis by race.         7.      Identify the null hypothesis        ...
A university wants to determine if students from different majors are equally likely to be cited...
A university wants to determine if students from different majors are equally likely to be cited for academic dishonesty. They average instances of documented cheating across 10 years for three different academic majors and find the following results: Business Administration (M = 5.1; N = 10), Fine Art (M = 1.9; N = 10), and Nursing (M = 3.2; N = 10). They also calculated the between-group and within-group sum of squares (SSB = 301.6; SSW =1343.8). Use a one-way...
A student wants to determine if pennies are really fair, meaning equally likely to land heads...
A student wants to determine if pennies are really fair, meaning equally likely to land heads up or tails up. He flips a random sample of 50 pennies and finds that 28 of them land heads up. Calculate the p-value and state the conclusion. Use ? = .05.
A fund manager wants to know if it is equally likely that the Nasdaq Average will...
A fund manager wants to know if it is equally likely that the Nasdaq Average will go up each day of the week. For each day of the week, the fund manager observes the following number of days when the Nasdaq Average goes up. Day of the Week Observed Monday 192 Tuesday 189 Wednesday 202 Thursday 199 Friday 218 For the goodness-of-fit test, the null and alternative hypotheses are ________. H0: p1 = p2 = p3 = p4 = 1/4,...
Obesity in African Americans 1. Identiy the stakeholders for obesity in African Americans using the influence...
Obesity in African Americans 1. Identiy the stakeholders for obesity in African Americans using the influence diagram to visualize both the stakeholders and their relationships to another. 2. Please make sure that the influence diagram has the following qualities: It includes obesity in African Americans It identifies at least 10 stakeholders It groups/clusters the stakeholders into logical categories It shows the influence-relationship between those stakeholders and the target population
The city police chief wants to know the perceptions African-Americans have of the police force in...
The city police chief wants to know the perceptions African-Americans have of the police force in his city. In comparison to white perception in the community, this information will tell the police chief if he has a community relations problem with the African American community that needs to be addressed. A survey reveals the following information. What would you tell the police chief given these results: Opinion African-American White Feel the police do a good job 74 223 Do not...
What have you learned about the situation of African Americans in the US? Why African Americans...
What have you learned about the situation of African Americans in the US? Why African Americans who kill white victims are more likely to receive the death penalty than whites who kill blacks? What did you learn from this movie about the Elaine Tragedy? Its for Sociology
An advocacy group claims that Blacks/African-Americans are over-represented in the incarcerated population. In other words, they...
An advocacy group claims that Blacks/African-Americans are over-represented in the incarcerated population. In other words, they are claiming that there is a higher percentage of Blacks/African-Americans in the incarcerated population than in the general US population. A random sample of 150 US residents is sampled and 26 identify as Black/African-American. In another random sample of 40 US incarcerated individuals, 14 identify as Black/AfricanAmerican. Is there enough evidence to support the group’s claim at the 1% level of significance? A. State...
HISTORY What did the New Deal mean for African Americans? How did it benefit African Americans?...
HISTORY What did the New Deal mean for African Americans? How did it benefit African Americans? Where did it fall short?
A group of researchers wants to evaluate the impact of a smoking cessation intervention on 50...
A group of researchers wants to evaluate the impact of a smoking cessation intervention on 50 cardiac patients at the outpatient clinic at a hospital, and compare that to another 50 cardiac patients from another hospital who did not receive the smoking cessation intervention. Explain you answer please. Write one research hypothesis, and one null.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT