1.researcher in the field of women’s studies wondered if women recall emotional events better than men....

1.researcher in the field of women’s studies wondered if women recall emotional events better than men. She decides to gather some data on the matter. An experiment is conducted in which eight randomly selected men and eight randomly selected women are shown 20 highly emotional photographs and then asked to recall them 1 week after the showing. The sample mean for men was 16 (photos recalled), and the sample standard deviation was 1.73. For the women, the sample mean was 17.5 (photos recalled) and the sample standard deviation was 1.19. Is there evidence that the women recall emotional photographs better than men? Use ? = 0.05. Be sure to include all the appropriate steps!

2. A car dealership has been using 1-minute spot ads on a local TV station. The ads always occur during evening hours and advertise different models and price range of cars on the lot that week. During a ten week period, the dealer kept a weekly record of the number of TV ads versus the number of cars sold.

Ads 6 20 0 14 25 16 28 18 10 8

Cars sold 15 21 10 16 28 20 40 25 12 15

a. Make a scatter diagram for the data. Which is the independent variable? What type of association does there appear to be between the variables?

b. Find the line that best fits the data and the correlation. Draw the line on the scatter diagram. Does it appear that the line fits the data well?

c. How many cars can the manager expect to sell if 12 ads per week are aired on TV?

d. Would it make sense to predict how many cars the manager can expect to sell if 40 ads are aired in a week? Why or why not?

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A researcher in the field of women’s studies wondered if women recall emotional events better than...

A researcher in the field of women’s studies wondered if women recall emotional events better than men. She decides to gather some data on the matter. An experiment is conducted in which 10 mean and 10 women were randomly selected and shown 20 highly emotional photographs and then asked to recall them 1 week after the showing. The following recall data are obtained. Scores are indicated as percent correctly recalled. Using α =0.05 1tail answer the questions below. Men Women...

Underlying Assumptions: Men and women are equally productive. Men’s wages are higher than women’s wages for...

Underlying Assumptions: Men and women are equally productive. Men’s wages are higher than women’s wages for the same work. Profit maximization. men women output per hour 20 units 20 units wage per hour $20 $18 Given these three assumptions, why would a business ever hire a man? One our assumptions must be wrong! Which combination of workers would maximize profits?

2. A women’s group believes that women are offered lower starting salaries than men applying for...

2. A women’s group believes that women are offered lower starting salaries than men applying for similar jobs. To test this claim, the group sends 10 women and 10 men to interviews for similar positions at various companies. The women were offered a mean starting salary 0f $29,500 with a standard deviation of $1,100, The men were offered a mean starting salary of $30,500 with standard deviation of $950. Assume that the population standard deviations are different and test the...

Some studies have shown that in the United States, men spend more than women on Valentine's...

Some studies have shown that in the United States, men spend more than women on Valentine's Day. A researcher wants to estimate how much more men spend by observing the amounts spent for random samples of men and women. We want to estimate the difference (µ men - µ women) using a 90% confidence interval. a) Find the AD (Anderson-Darling) for both Men and Women (using Minitab). (round to 3 decimal places) b) Report the endpoints of the 90% confidence...

Some studies have suggested that, on average, women earn less than men with the same productive...

Some studies have suggested that, on average, women earn less than men with the same productive characteristics, not because of labor market discrimination, but because they do not have as many occupational choices. Why would occupational choices matter in terms of earnings or employment differences between men and women? Similar, the U.S. used to have laws preventing women from working in certain occupations. Analyze the consequences of this law for male and female workers.

The wage gap between men and women persists even in the face of women’s greater participation...

The wage gap between men and women persists even in the face of women’s greater participation in the workplace and increasing educational attainments, including graduate and professional training. In the video, “Why Can’t a woman Succeed Like a Man?” we see some explanations for this wage inequality. What are some of the barriers women face as they enter the workplace? How might the situation be changed?

A researcher wants to determine if there is a significant difference between men and women in...

A researcher wants to determine if there is a significant difference between men and women in terms of guilty/non guilty pleas submitted by a sample of 50 defendants. Knowing that there are 25 women and 25 men in this sample and that 15 men entered guilty pleas [and 10 no guilty pleas] and 5 women entered guilty pleas [and 20 no guilty pleas]… [Hint: Calculated Chi-Sq. = 8.33] Formulate the null and research/alternative hypotheses. Create a contingency table with 2...

If 3 Men or 4 Women Can Plow a Field in 43 Days, How Long Will 6 Men and 5 Women Plow It?

If 3 Men or 4 Women Can Plow a Field in 43 Days, How Long Will 6 Men and 5 Women Plough It?

A police department is interested in learning if men or women do better as a result...

A police department is interested in learning if men or women do better as a result of their training course. They administer a skills test to 60 newly trained officers: 30 males and 30 females. Use the data below to establish hypotheses and test them using a chi-square test. State the decision with regard to whether the H0 is ultimately rejected or retained. Test Scores Customary Course New Course Excellent 7 13 Good 15 15 Unsatisfactory 8 2

Q2. A researcher is interested in comparing the wages of men and women doing the same...

Q2. A researcher is interested in comparing the wages of men and women doing the same type of job at a large company. The data is below: Men: average wage (per hour) = $18 .95; standard deviation = $4.44; n =18 Women: average wage (per hour) = $15.09; standard deviation = $3.38; n =13 Test whether the difference between the means of the two groups is significant at an alpha (significance level) of .05. (a) What are the null and...

Subjects