DA 5 - Confidence Intervals-1

A group of participants was surveyed and the information collected shown in the partially completed contingency table below regarding the site of skin cancer. Firstly, calculate the missing values. Melanoma Other Total Head U 43 X Trunk 52 V 98 Extremities 142 112 Y Total 229 W Z Now, using the completed contingency table, select the statements from the following list that are true. Note: a statement is true only if the value you calculated from the completed contingency table, when rounded to the same number of decimal places as in the statement, is the same as the value in the statement. 18.1% of skin cancers appear on the head 71.4% of skin cancers were melanomas or appeared on the head Given the skin cancer is something other than melanoma, the probability it is not on the extremities is 0.443 Of skin cancers appearing on the trunk, 46.9% are not melanomas

In the late 1980s land prices in Japan surged upward in a speculative bubble. Land prices then fell for 11 straight years between 1990 and 2001. What can we safely assume happened to land rent in Japan over those 11 years? Use graphical analysis to illustrate your answer.   graphical analysis is must, you have to draw graph.  Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.

Please answer and show complete solution. Thank you!

practise papers will be on time series and forecasting. You will use quarterly (GDP, GDP deflator) or monthly data ( CPI, PPI, industrial production index) . Or some other data but it should have at least 100 observations. The topic is regarding about the effect of oil prices on GDP.

exaplin Z-D model with the help of diagrams

please answer in text form and in proper format answer with must explanation , calculation for each part and steps clearly

Construct a histogram that represents the following data regarding the score ranges for the extrovertive tendencies of respondents to a personality questionnaire. Personality Questionnaire Class Frequency 16-19 9 20-23 3 24-27 8 28-31 7 32-35 7 Copy Data

solve within 30 mins

What is the difference between an unbiased estimator and a consistentestimator?

You are given the following dataset from a sample of the population.  Superhero Number of Villains Captured Number of Losses  Average Hours of  Sleep Spiderham 30 9 12 Alligator Loki 50 1 23 Iron Man 20 8 6 Phil Coulson 18 2 8 Yelena Belova 25 5 2 Round all answers to 2 decimal places. IE: 3.567 = 3.57 A. What kind of dataset is this?  Answer either Panel, Time series, or cross sectional B. Calculate the average number of villains captured in this sample.   C. Calculate the variance of the number of villains captured in this sample.     D. Calculate the correlation between the number of villains captured and average hours of sleep  . If answer is negative, include negative sign. E. Calculate the sample covariance between the average number of losses and average hours of sleep  . If answer is negative, include negative sign.

Discuss the concept of measurement from the perspectives of accuracy, validity, and reliability.  Ensure you define all three of these. Also briefly discuss the various types of validity.

When considering data metrics, the first task is to define just what we want to occur and what we need to measure. True False

In the late 1980s land prices in Japan surged upward in a speculative bubble. Land prices then fell for 11 straight years between 1990 and 2001. What can we safely assume happened to land rent in Japan over those 11 years? Use graphical analysis to illustrate your answer.   Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.

(10+05)The following data were collected on the height (inches) and weight (pounds) of women swimmers.Height6870646566 Weight132110106115128 d. Suppose the value of co-efficient of determination is estimated to be equals 0.85, what does this value explains?

A sample of 50 UNR students was randomly selected. A question asked was about annual cost of driving a car and 50 numbers were collected. (Have you ever calculated how much costs you to drive your vehicle annually? The costs should include DMV registration, insurance, gas ( weekly cost times 52), parking, repair and maintenance, tickets/fines, and depreciation. If you have not, find it out. Often, the number is much higher than what you would think.) The sample variance a. should equal to the population variance. b. would change depending on the students included in the sample. c. should be smaller than the sample mean. d. should be smaller than the sample standard deviation. Ĉ 26. A sample of 50 UNR students was randomly selected. A question asked was about annual cost of driving a car and 50 numbers were collected. (Have you ever calculated how much costs you to drive your vehicle annually? The costs should include DMV registration, insurance, gas (weekly cost times 52), parking,…

A10

A random sample of 1-gallon cartons of milk is selected from the automatic filling machine.   The contents are precisely measured.  The measurements are shown to the right.  The measurements are in ounces (1 gallon = 128 oz.)  127.46 129.83 129.51 129.75 128.45 127.34 129.18 127.29 127.28 128.46 127.7 130.87 128.04 125.76 127.77 126.72 127.58 128.5 127.37 128.08 127.51 127.66 129.78 128.42 126.35 126.34 128.53 128.48   16 The mean fill of the sample of containers is, a 131.95       b 130.65       c 129.35       d 128.07

A random sample of 1-gallon cartons of milk is selected from the automatic filling machine.   The contents are precisely measured.  The measurements are shown to the right.  The measurements are in ounces (1 gallon = 128 oz.)  127.46 129.83 129.51 129.75 128.45 127.34 129.18 127.29 127.28 128.46 127.7 130.87 128.04 125.76 127.77 126.72 127.58 128.5 127.37 128.08 127.51 127.66 129.78 128.42 126.35 126.34 128.53 128.48   15 The sum of the fill of the sample containers is, a 3586.01       b 3481.56       c 3380.16       d 3281.71

A data set containing annual information about GDP per capita, inflation and unemployment rates for European countries for the past 100 years is called panel data. 0000 time-series data. experimental data. cross-sectional data.

THE schematic structure of HEALTH ECONOMICS was first drawqn by: lakataus blaug williams flein

In terms of econometric perspective, what are the assumptions or elements that you need to consider in developing the model for estimation.

Alejandro is selling HDMI cables on eBay, and is trying to determine the best price to sell at.  For the last 10 weeks, he has adjusted his price slightly each week and tracked the number of cables he sold.  He plotted the results, and drew a line he feels fits the data well. Price ($) 3, 3.25, 3.5, 3.75, 4, 4.25, 4.5, 4.75, 5 Quantity Sold - 50, 100, 150, 200, 250   a) The line of best fit passes through the points (3.50, 230) and (4.75, 210).  Find an equation for the line.   Use variables: p for price in dollars, and Q for quantity of cables sold.     b) Using this model, predict the number of cables Alejandro would sell at a price of $3.65, to the nearest whole cable.   cables

Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.

If incorrect then 10 downvotes Read the following statements. i. As a result of globalisation, companies are increasingly making acquisitions around the world. ii . In the world of financial reporting, companies have increasingly moved from historical cost to fair value accounting. iii. In the new age economy, intellectual property is becoming an important driver of a company's value. Which of the above has contributed to the growth of business valuation in recent years? Pick the best answer. Question 7Select one: a. (iii) only b. (1) & (ii) only c. (i) & (ii) only d. All of the above

Please help me with this q

Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.

The Wall Street Journal’s website, www.wsj.com, reported the number of cars and light-duty trucks sold through October of 2014 and October of 2015. The top sixteen manufacturers are listed here. The sales information for all manufacturers can be accessed in a data file below.  Sales data are often reported in this way to compare current sales to last year’s sales.     Year-to-Date Sales   Manufacturer Through October 2015   Through October 2014   General Motors Corp. 2,562,840   2,434,707   Ford Motor Company 2,178,587   2,065,612   Toyota Motor Sales USA Inc. 2,071,446   1,975,368   Chrysler 1,814,268   1,687,313   American Honda Motor Co Inc. 1,320,217   1,281,777   Nissan North America Inc. 1,238,535   1,166,389   Hyundai Motor America 638,195   607,539   Kia Motors America Inc. 526,024   489,711   Subaru of America Inc. 480,331   418,497   Volkswagen of America Inc. 294,602   301,187   Mercedes-Benz 301,915   281,728   BMW of North America Inc.…

Construct a histogram that represents the following data regarding the score ranges for the extrovertive tendencies of respondents to a personality questionnaire. Step 1 of 5: Find the lower class boundary for the second class. Personality Questionnaire Class Frequency 28-30 8 31-33 9 34-36 3 37-39 8 40-42 9 Copy Data

True or False? A dot plot always reveals the exact data range, whether the sample size is large or small.

The last digit of the heights of 67 statistics students were obtained as part of an experiment conducted for a class. Use the following frequency distribution to construct a histogram. What can be concluded from the distribution of the digits? Specifically, do the heights appear to be reported or actually measured? Digit Frequency 0 15 5 5 1 T Choose the correct histogram below. O A. O B. O C. D. 18- 56789 0123456789 ܩܫܠ 6789 123456789 Are the data reported or measured? O A. The data appears to be measured. The heights occur with roughly the same frequency. O B. The data appears to be measured. Certain heights occur a ..

For each of the following variables, determine whether the variable is categorical or numerical. If the variable is numerical, determine whether the variable is discrete or continuous. In addition, determine the measurement scale. a. Time, in hours, spent working per month b. Name of a household's cable television provider c. Number of online purchases made in a month d. Satisfaction rating of a cable television provider (from low to high) e. Time, in hours, spent surfing the Internet per month a. Time, in hours, spent working per month is what kind of variable? O A. This variable is a continuous numerical variable that is ratio-scaled. O B. This variable is a discrete numerical variable that is ratio-scaled. OC. This variable is a discrete numerical variable that is interval-scaled. O D. This variable is a categorical variable that is ordinal-scaled. O E. This variable is a categorical variable that is nominal-scaled. O F. This variable is a continuous numerical variable that is…