# data collected in the imaginary economy of kharkeez reveals that when the price related questions

• 1data collected in the imaginary economy of kharkeez reveals that when the price

data collected in the imaginary economy of kharkeez reveals that when the price of drof increased by 25%, the quantity of drof sold decreased by 20%, and sales of goo decreased by 15%. What is the cross-price elasticity of demand between goo and drof?

• 2 The following experimental data set has been collected {(xi, yi)} = { (0.6, 10), (1.3, 20), (2.1, 30), (3.6, 50), (7.3, 100) }

This is calculus!! I really need help. The following experimental data set has been collected {(xi, yi)} = { (0.6, 10), (1.3, 20), (2.1, 30), (3.6, 50), (7.3, 100) }. Find the best straight line y = mx that fists the data by using a method that minimizes the error squared: E =n=1(y- mx)^2 = (y1 - mx1)^2 + (y2- mx2)^2 + ... + (yn - mxn)^2. The task is to find slope, m of the straight line by minimizing E using the data set given above. Please help. I don't know where to begin.

• 3 The following experimental data set has been collected {(xi, yi)} = { (0.6, 10), (1.3, 20), (2.1, 30), (3.6, 50), (7.3, 100) }

I really need help. The following experimental data set has been collected {(xi, yi)} = { (0.6, 10), (1.3, 20), (2.1, 30), (3.6, 50), (7.3, 100) }. Find the best straight line y = mx that fists the data by using a method that minimizes the error squared: E =n=1(y- mx)^2 = (y1 - mx1)^2 + (y2- mx2)^2 + ... + (yn - mxn)^2. The task is to find slope, m of the straight line by minimizing E using the data set given above. Please help. I don't know where to begin.

• 454. The following data on annual rates of return were collected from five stocks

54. The following data on annual rates of return were collected from five stocks listed on the NewYork Stock Exchange (“the big board”) and five stocks listed on NASDAQ. At the .10 significancelevel, can we conclude that the annual rates of return are higher on the big board?NYSE Nasdaq17.16 15.817.08 16.2815.51 16.218.43 17.9325.15 7.77

• 5What percent of the selling price in the 14.7 cents per L tax collected by the federal government

What percent of the selling price in the 14.7 cents per L tax collected by the federal government?a) 65.7 cents/Lb) 73.9 cents/LThe answers are a)15% and b) 14%, but how do i show my work?

• 6Your company may wish to release a new e-reader device. Based on data collected from various...

Your company may wish to release a new e-reader device. Based on datacollected from various sources, your company has come up with the followingregression equation for the profit of the new e-reader:Profit = \$0.15 × number of e-readers sold – \$28Or, assuming x = the number of e-readers sold, this would be thesame regression equation:Profit = 0.15x – 28In this case, the values are given in thousands (i.e., thecost of making an individual e-reader will be \$150 [0.15 × 1,000], with \$28,000[28 * 1,000] in constant charges).Answer the following questions based on the given regression equation:Using the graphing program that you downloaded, graph the profit equation.Discuss the meaning of the x- and y-axis values on the graph. (Hint: Be sure tolabel the axis)Based on the results of the graph and the profit equation provided, discussthe relationship between profits and number of e-readers produced. (Hint:Consider the slope and y-intercept.)If the company does not sell a single e-reader, how much is lost ?Mathematically, what is this value called in the equation?If the company sells 5,000 e-readers, how much will the company make (orlose)?If profit must equal 100 thousand, how many e-readers will your company needto sell? (Round up to the nearest e-reader.)If your company is hoping to break even, how many e-readers will need to besold to accomplish this? (Round up to the nearest e-reader.)Please submit yourassignment

• 7Some college students collected data on the intensity of light at various depths in a lake

Some college students collected data on the intensity of light at various depths in a lake. Here are their data: Depth (meters) Light intenisty (lumens) 5 168.00 6 120.42 7 86.31 8 61.87 9 44.34 10 31.78 11 22.78 Take the natural logarithm (ln) of the light intensity measurements and calculate the least-squares regession equation for the transformed data to perform the inverse transformation to express light intensity as an exponential function of depth in the lake.

• 8What SPECIFIC statistical test would be applied to these data collected to answer the following questions

What SPECIFIC statistical test would be applied to these data collected to answer the following questions? What’s the average amount of pain Mr. Smith reported yesterday? Is there a significant difference in depression levels (using a scale of 0-60) between pts who take citalopram at 40 mg/d versus those who take citalopram at 80 mg/d? Are levels of job stress higher among RNs who work in pediatric or adult ICUs?

• 9In the tests of a new pharmaceutical product, data were collected for use in the approval process required by theU

In the tests of a new pharmaceutical product, data were collected for use in the approval process required by theU.S. Food and Drug Administration (FDA). Some participants were given a placebo, an inert substance that looks like the drug; others were given the drug. The data are shown in the following table: No Help HelpDrug 22 47Placebo 31 20What is the probability that a. the participants perceived that their “medication" helped if they received the drug?b. the participants perceived that their “medication” helped if they received the placebo?c. the participants perceived that their “medication” helped?

• 10A statistics instructor collected data on the time it takes the students to complete a test

A statistics instructor collected data on the time it takes the students to complete a test. The test taking time is uniformly distributed within a range of 35 minutes to 55 minutes

• 11Steven collected data from 20 college students on their emotional responses to classical music

Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 to 10, with 1 indicating that it “made them very sad” to 10 indicating that it “made them very happy.” Steve computes the total scores from each student and created a variable called “hapsad.” Steve then conducts a one-sample t-test on the data, knowing that there is an established mean for the publication of others that have taken this test of 6. The following is the scores: 5.0 5.0 10.0 3.0 13.0 13.0 7.0 5.0 5.0 15.0 14.0 18.0 8.0 12.0 10.0 7.0 3.0 15.0 4.0 3.0 a) Conduct a one-sample t-test. What is the t-test score? What is the mean? Was the test significant? If it was significant,at what P-value level was it significant? b) What is your null and alternative hypothesis? Given the results did you reject or fail to reject the null and why?

• 12The following data were collected as part of a study of coffee consumption among male and female undergraduate students

The following data were collected as part of a study of coffee consumption among male and female undergraduate students. The following reflects cups per day consumed: Men: 3 4 6 8 2 1 0 2 Female: 5 3 1 2 0 4 3 1 Generate a 95% confidence interval for the difference in mean numbers of cups of coffee consumed between men and women.