Movie companies need to predict the gross receipts of individual movies after a movie has debuted. The accompanying results are the first weekend​ gross, the national​ gross, and the worldwide gross​ (in millions of​ dollars) of six movies. Title First Weekend National Gross Worldwide Gross   Movie A 90.537   317.093   976.725     Movie B 88.347   261.874   878.751     Movie C 93.603   249.391   795.796     Movie D 102.269   290.226   896.767     Movie E 77.027   292.867   938.823     Movie F 77.712   301.376   934.409     Compute the covariance between first weekend gross and national​ gross, first weekend gross and worldwide​ gross, and national gross and worldwide gross.   Find the covariance between first weekend gross and national gross.

DuPont Automotive releases a Color Popularity Report which provides the percentages of car colors in North America. The most recent report is shown in the following table.

What is the five number summary for this data: 61 74 47 60 62 63 65 79 55 85?  How do I get to the first and third quarter?

In 2016 the Better Business Bureau settled 84% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.84, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(p) (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.04 of the population proportion (to 4 decimals)? probability : = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2…

The national center for educational statistics reported that in 2008-2009, 178,564 master's degrees in education were awarded in the United States, and that this represented 27% of all master's degrees awarded. How many master's degrees were awarded in 2008-2009?

A sales manager collected the following data on annual sales and years of experience. Annual Sales ($1000s) 80 Salesperson Years of Experience 1 1 4 102 3 6 103 4 10 119 5 13 136

find population sd   12,15,18,16,19,22,23,25,28

Many countries, especially those in Europe, have significant gold holdings. But many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic product for nine countries (WordPress and Trading Economics websites, February 24, 2012). Click on the datafile logo to reference the data. Country Gold Value Debt China 63 17.7 France 146 81.7 Germany 203 83.2 Indonesia 33 69.2 Italy 147 119 Netherlands 36 63.7 Russia 50 9.9 Switzerland 62 55 U.S. 487 93.2   Using the entire data set, develop the estimated regression equation that can be used to predict the debt of a country given the total value of its gold holdings. y^ =   (to 4 decimals)   (to 4 decimals) Gold Value Suppose that after looking at the scatter diagram in part (a) that you were able to visually identify what appears to be an…

Customers arrive at a rate of 40 per hour. You can process 50 customers per hour. a. What percentage of the time are you busy? b. What is the average number of customers in the system? c. What is the average time that a customer spends in the system (in minutes)?

Find the 5 number summary for the data shown below. 57 50 13 70 68 11 30 26 38 35 5 number summary:_,_,_,_,_