A pollster would like to survey 500 students to determine the percentage that would vote for Ben Carson. If the pollster surveyed 500 students who worked directly with Carson will the results be meaningful to depict the thinking of the entire US population of students? Answer yes or no with explanation.
Why was Marilyn Vos Savant's calculation of having breast cancer given a positive mammogram test flawed?
A. Hubble telescope sees a dime sized view of the universe which represents an accurate sample
B. Jhon Hickley is insane
C. Fibonacciseries appears eveerywhere in nature
D.Women who get mammograms have a higher probability of breast cancer than the random American and Marilyn used the random American probabillity in her calculation.
In: Statistics and Probability
Refer to the Baseball 2016 data, which report information on the 30 Major League Baseball teams for the 2016 season. a. At the .05 significance level, can we conclude that there is a difference in the mean salary of teams in the American League versus teams in the National League? b. At the .05 significance level, can we conclude that there is a difference in the mean home attendance of teams in the American League versus teams in the National League? c. Compute the mean and the standard deviation of the number of wins for the 10 teams with the highest salaries. Do the same for the 10 teams with the lowest salaries. At the .05 significance level, is there a difference in the mean number of wins for the two groups? At the .05 significance level, is there a difference in the mean attendance for the two groups?
In: Statistics and Probability
When Congress was considering the North American Free Trade Agreement (NAFTA) in 1993, Ross Perot, a prominent business owner (and third-party candidate for president in 1992) argued that it would do no good for the USA to engage in trade with Mexico, since Mexicans, according to Perot, had incomes that were too low to allow them to afford American goods. Thus, he claimed, trade between the two countries would simply be in one direction with low-wage Mexicans producing and sending cheap goods into the USA but no producers in the USA being able to sell anything to Mexicans. Economically speaking (applying trade theory), is the scenario that Perot described what actually happens in trading relationships? Please explain.
In: Economics
Conduct a formal test to determine if the proportion of students identifying as African-Americans differs significantly from the proportion published in US News. Use an α=0.05. Be sure to include each of the four steps of hypothesis testing. Do not use excel.
In: Statistics and Probability
1) In 2003, the American Psychological Association conduced a survey of a random sample of psychologists with various academic degrees and levels of experience. Of the 31 psychologists who received a masters degree in 2003, the mean income was $43,834 with a standard deviation of $16,870. Use this information to construct a 99% confidence interval for the average salary of psychologists receiving masters degrees in 2003.
2)In 2003, the American Psychological Association conduced a survey of a random sample of psychologists with various academic degrees and levels of experience. Of the 31 psychologists who received a masters degree in 2003, the mean income was $43,834 with a standard deviation of $16,870. Use this information to construct a 90% confidence interval for the average salary of psychologists receiving masters degrees in 2003.
In: Statistics and Probability
In: Statistics and Probability
Pan American? Airlines' shares are currently trading at $57.56 each. The market yield on Pan? Am's debt is 6?% and the? firm's beta is 0.6. The? T-Bill rate is 4.25?% and the expected return on the market is 8.25?%. The? company's target capital structure is 60?% debt and 40?% equity. Pan American Airlines pays a combined federal and state tax rate of 35?%. What is the estimated cost of common? equity, employing the constant growth dividend discount? model? Assume that Pan Am pays annual dividends and that the last dividend of ?$2.29 per share was paid yesterday. Pan Am started paying dividends 5 years ago. The first dividend was ?$1.59 per share.?
In: Finance
In 2013, the Gallup Poll asked 1015 American adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 437 said they supported such a tax. Does the survey provide enough evidence that less than 45% of American adults favor an internet sales tax? Use α = 0.05 level of significance?
b) Step 2: Find the test statistic.
c) Step 3: P-value OR Critical value(s): Label answer as “P-value” or “CV” and draw a detailed curve.
d) Step 4: Decision
e) Step 5: Conclusion
f) What does the level of significance α = 0.05 means in hypothesis testing?
In: Statistics and Probability
Word Count (500 words)
In: Finance
Julien and Sarah are married, file a joint return with AGI of $126,000, and have two dependent children, Kaya and Christopher. Kaya just finished her third year at college and Christopher just finished his first year of graduate school (fifth year of college). Qualified education expenses for 2019 were $4,000 for Kaya and $5,000 for Christopher.
Compute the following amounts for Julien and Sarah's education credits for 2019 :
a: American Opportunity Credit before any phaseout
b: American Opportunity Credit after any phaseout
c: Lifetime Learning Credit before any phaseout
d: Lifetime Learning Credit after any phaseout
e: Total education credits they can claim
In: Accounting