Econometrics] The World Bank hires you to analyze the effect of the introduction of new irrigation systems in a series of Sub-Saharan African countries. They are particularly interested on their effect in the crop production of each country. They give you data for each country on the kilometers of irrigation tubes constructed, the total crop harvest, as well as information on the average educational attainment for each year between 2000 and 2017. Which type of analysis would you perform based on this information?

The index of leading economic indicators, compiled and published by the U.S. National Bureau of Economic Research, is composed of 12 time series, such as the average work hours of production in manufacturing, manufacturers’ new orders, and money supply. This index and similar indexes are designed to move up or down before the economy begins to move the same way. Thus, an economist has statistical evidence to forecast future trends.You want to construct a leading indicator for Erie County in upstate New York. The index is to be based on 2000 data. Because of the time and work involved, you decide to use only four time series. As an experiment, you select these four series: unemployment in the county, a composite index of county stock prices, the County Price Index, and retail sales. Here are the figures for 2000 and 2018. The weights you assign are unemployment rate 20%, stock prices 40%, County Price Index 25%, and retail sales 15%. (Round your answers to 1 decimal place.) a. Using…

I have collected real data on the sale of a microwavable cup of soup across 20 different cities for the same time period (a month).  The variables in the dataset are:   Quantity sold in the city for that month:  Measured in thousands of units Price:  measured in dollars Average Income in the city:  Measured in thousands of dollars Ads:  Average number of ads run in stores for that city during that month. Price of a substitute product:  measured in dollars Population of the city:  measured in thousands of people   The dataset is on Canvas and, using Excel or any other statistical software, please answer the following questions:   1. Describe the patterns in quantity sold and own and rival prices during this time period using basic descriptive statistics.  Graphs are welcome as well.   2. Take the logs of the variables, and estimate the demand function. a. Interpret the R-square. b. Interpret the coefficients for logP and logPsub c. Interpret the p-values associated with each independent…

A pool of 500 Houston residents indicated that 16% of them participated in Women’s March on January 21, 2017. We are interested in figuring out the actual percentage of Houston residents that participated in Women’s March. Please answer the following questions.       1. What kind of data is this? Numerical data Categorical data   2. What is the research question? What is the population proportion of Houston residents who participated in Women’s March? What is the percentage of 500 Houston residents who participated in Women’s March? What is the population of Houston residents? What is the sample proportion among the 500 Houston residents who participated in Women’s March? What is the population of Houston residents who participated in Women’s March? What is the pool of 500 Houston residents?   3. What is the population of interest? All Houston residents All US residents 16% of the 500 Houston residents from the pool who participated in Women’s…

6. Accidents on highways are one of the main causes of death or injury in developing countries and the weather conditions have an impact on the rates of death and injury. In foggy, rainy, and sunny conditions, 1/4, 1/8, and 1/21 of the accidents result in death, respectively. Sunny conditions occur 60% of the time, while rainy and foggy conditions each occur 20% of the time. Given that an accident without deaths occurred, what is the conditional probability that it was foggy at the time?

You oversee assessing different training methods for effectiveness. You have data on 4 methods: Method 1 (?1 = 87, ?1= 12), Method 2 (?2= 92, ?2 = 14), Method 3 (?3= 88, ?3 = 15), and Method 4 (?4=75, ?4 = 11). Test for differences among these means, assuming ??B=64.81 and ??T=399.45.

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(b) Table 1 shows consumables usage data from a leading manufacturer. Forecast the demand for August, September and October using: i) a three-month moving average ii) a four-month weighted moving average using 50 percent of the actual usage for the most recent month, 20 percent of two months ago, 15 percent of three months ago and 15 percent of four months ago. Using an example, explain what are the benefits of using the weighted moving average method of forecasting instead? Month February 2023 March 2023 April 2023 May 2023 June 2023 July 2023 Consumables Used 884 892 972 990 956 880

Summarize the advantages and disadvantages of qualitative research when compared to experimental or survey research? Under what circumstances would a researcher choose a qualitative design?

Overhead Door (OD) Corporation’s founder, C. G. Johnson, invented the upward-lifting garage door in 1921 and the electric garage door opener in 1926. Since then OD has been a leading supplier of commercial, industrial, and residential garage doors sold through a nationwide network of more than 450 authorized distributors. They have built a solid reputation as a premier door supplier, commanding 15 % share of the market. Suppose that customers assess door quality first in terms of the ease of operation, followed by its durability. The quality improvement team (QIT) might then assign an engineering team to determine the factors that contribute to these two main problems. Smooth operation of a garage door is a critical quality characteristic that affects both problems: If a door is too heavy, it’s difficult and unsafe to balance and operate; if it’s too light, it tends to buckle and break down frequently or may not close properly. Suppose the design engineers determine that a standard…