Question

In: Statistics and Probability

Is attractiveness related to deciding to go out on a date? Below is data for males...

Is attractiveness related to deciding to go out on a date? Below is data for males and females from a study on speed dating (http://chance.amstat.org/2014/04/speed-dating/).

Males

	Decision
Attractiveness Rating	Date	No Date
0-4	11	0
4-8	100	65
8-10	16	81

Females

	Decision
Attractiveness Rating	Date	No Date
0-4	22	4
4-8	109	64
8-10	17	58

Is attractiveness related to deciding to go out on a date? Below is data for males and females from a study on speed dating (http://chance.amstat.org/2014/04/speed-dating/).

Males

	Decision
Attractiveness Rating	Date	No Date
0-4	11	0
4-8	100	65
8-10	16	81

Females

	Decision
Attractiveness Rating	Date	No Date
0-4	22	4
4-8	109	64
8-10	17	58

What type of hypothesis test would you use to see if attractiveness and deciding on a date are related for males?

Goodness of Fit
Test of Heterogeneity
Test of Independence

2. What type of hypothesis test would you use to see if attractiveness and deciding on a date are related for females?

Goodness of Fit
Test of Heterogeneity
Test of Independence

Can you conduct the tests with data as given?
1. Yes, because each cell has a positive number in it
2. Yes, because each cell has a large enough value
3. No, since totals are not given to us
4. No, since there cells with values less than five
Combine the lower two categories and conduct the tests. What are the p-values for the tests for
1. Males
2. Females
Are attractiveness and deciding on a date related?
1. No for males, No for females
2. No for males, Yes for females
3. Yes for males, No for females
4. Yes for males, Yes for females

Expert Solution

What type of hypothesis test would you use to see if attractiveness and deciding on a date are related for males? Test of Independence
What type of hypothesis test would you use to see if attractiveness and deciding on a date are related for females? Test of Independence
Can you conduct the tests with data as given? Yes, because each cell has a positive number in it
Combine the lower two categories and conduct the tests. What are the p-values for the tests for

orchestra answered 1 year ago

Is intelligence related to deciding to go out on a date? Below is data for males and...

Is intelligence related to deciding to go out on a date? Below is data for males and females from a study on speed dating Male Decision Intelligence Rating Date No Date 0-8 66 53 8-10 58 91 Females Decision Intelligence Rating Date No Date 0-8 57 34 8-10 90 92 1. What type of hypothesis test would you use to see if intelligence and deciding on a date are related for males? a. Goodness of Fit b. Test of Heterogeneity c....

13) For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners...

13) For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners (x) are recorded along with the attractiveness ratings by females of their male date partners (y); the ratings range from 1 to 10. The 50 paired ratings yield: x overbar=6.3, y overbar=6.2 , r=−0.220, P-value=0.1250, and y^=7.79-0.248x. Find the best predicted value of y^ (attractiveness rating by female of male) for a date in which the attractiveness rating by the male of the female is...

For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners (x)...

For 50 randomly selected speed dates, attractiveness ratings by males of their female date partners (x) are recorded along with the attractiveness ratings by females of their male date partners (y); the ratings range from 1 to 10. The 50 paired ratings yield x (overboard)= 6.3, y (overboard) =6.0, r = −0.275, P-value= 0.053, and y^ = 8.13−0.332x. Find the best predicted value of ModifyingAbove y with caret y^ (attractiveness rating by female of male) for a date in which...

Say Your friend is trying to convince you to go out on a blind date with...

Say Your friend is trying to convince you to go out on a blind date with another friend. You have heard them try to convince other people before and know a bit about the probabilities of how they describe dates. When your friend knows it is a great date, they always say they recommend the date. When your friend thinks it is an OK date, your friend recommends the date 75% of the time. When your friend thinks it will...

Data below shows counts of males and females in a sample population and the political party...

Data below shows counts of males and females in a sample population and the political party they voted for. Create the observations matrix using the provided R syntax below Select the appropriate statistical test, Formulate the null hypothesis in your own words, Compute the test statistic, Find the critical value in Chi square table with the corresponding degrees of freedom Find and interpret the statistical decision at the 0.01 significance level # Gender and political affiliation observed <- as.table(rbind(c(762, 327,...

Go to the Yahoo! Finance website and find out the required information in table below for...

Go to the Yahoo! Finance website and find out the required information in table below for two companies Toyota Motor Corporation (ticker “TM”) and Ford (ticker “F”). You need to provide the date when you are reporting on companies. (If information is not available put NA) Considering collected information, compare the performance of this two companies in terms of profitability. Name of company Toyota Ford Date of report Bid Ask Volume Market Cap P/E EPS Div. &...

In the USA, 29% of the population are males. Data indicates that 42% of the males...

In the USA, 29% of the population are males. Data indicates that 42% of the males watch tv while 18% of the females watch tv. Using Bayes’ Theorem, write out the formula with variables then with the numbers, and calculate P(females/watch tv) Using N=100 draw and label a tree diagram Using N=100, draw and label a cross tab table. Using the cross table above: Verify by numerator and denominator, P(females/watch tv) in a P(X=male/do not watch tv)e P(X=male and watch...

In a test of a new medication, 65 out of 98 males and 45 out of...

In a test of a new medication, 65 out of 98 males and 45 out of 85 females responded positively. At the 0.05 level of significance, can we say that the drug is more effective for males?

A risk-neutral plaintiff in a lawsuit is deciding whether to settle a claim or go to...

A risk-neutral plaintiff in a lawsuit is deciding whether to settle a claim or go to trial. The defendants have offered a $150,000 settlement. If the plaintiff does not settle, she believes that the probability of winning at trial is 75%. If the plaintiff wins, she is awarded X dollars. If she loses her payoff is $0. How large must X be in order for the plaintiff to turn down the settlement offer? Suppose instead that the plaintiff is risk-averse,...

Cindy, who will graduate from college in a year is deciding whether to go on for...

Cindy, who will graduate from college in a year is deciding whether to go on for her master’s degree which will last two years. She figures that if she takes a job immediately, she can earn $40,000 per year in real terms for the remainder of her working years. If she goes on for two more years of graduate study, however, she can increase her earnings to $50,000 per year. The cost of tuition is $40,000 per year in real...