Suppose you are going to conduct a sample survey regarding employee job satisfaction on 20 employees from various organizations. What are the various probability sampling methods you may use here? Explain those methods with suitable examples.
Q: ods which might be use to select the sample households.
A: Answer Specifically for an outsized population, the tactic that is additional in usage is sampling,…
Q: You are assigned to research what 3rd year Wits College students jozi Campus think about the module…
A: Non-probability sampling is a technique for selecting units from a population that is subjective…
Q: a) compute thr sample covariance The following is a set of data from a sample of n 11 items.…
A: Answer: Sample covariance measures the variation from two random variables, through the covariance…
Q: You are interested in analyzing how rent controls affect students' housing outcomes. You collect…
A: The linear regression model depicts the linear relationship between dependent and independent…
Q: A certain brand of tea bags comes in packages of 5, 10, and 20 sachets, costing $5, $9, and $15 per…
A:
Q: Question 5 The Q-statistic follows which probability distribution? Standard Normal None of the…
A: NOTE: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…
Q: You need to undertake a face - to - face interview survey of managing directors of small to medium -…
A: Quota sampling would be preferred. In this sampling instead of 400 respondents,less number of…
Q: A store sells from 0 to 12 computers per day. Is the amount of daily computer sales a discrete or…
A: Random variable is a variable or a set of all the possible variables in the form of numbers,…
Q: The height (in inches) of a random sample of 28 players in NCAA Division 1 basketball teams is shown…
A: Sum of squared x minus n times squared mean, the formula is part of statistics.
Q: Suppose you have a random sample of 500 individuals working in Canada, including data on hourly…
A: The multiple regression analysis is generally used to see how changes in a particular explanatory…
Q: 8. Which of the following best describes the linear probability model? The model is the application…
A: When talking about regression model, there are numerous forms of a regression to estimate the…
Q: Suppose you want to determine the reading literacy of freshmen college students in NJ. Describe how…
A: These are different methods of sampling. The steps that will be followed in each case are : Part…
Q: n unbiased, observable estimator of the variance of the error term (σ2?2) is σˆ2?^2
A: Given - wage=β0+β1 educ is the econometric model. 120 =N = Number of observations
Q: Consider the following frequency distribution:Class Frequency0 < 10…
A: In economics, the frequency distribution can be categorised under the statistical economics where…
Q: Identify the sampling technique used. A researcher randomly selected 35 of the nation's middle…
A: A researcher randomly selected 35 of the nation's middle schools and interviewed all of the…
Q: G. Thumb, the leading salesperson for the Moe D. Lawn Landscaping Company, turned in the following…
A: The most common way to measure central tendency is with the mean. In reality, it reflects the…
Q: Choose an independent and dependent variable suitable for tabular analysis from the Fear of Crime…
A:
Q: A political pollster wants to ensure that their poll on attitudes toward separation of church and…
A: Here use basic definition of cluster sampling and frequency Cluster sampling : here population…
Q: A statistics instructor asks each student in his classes to report how much the student spent on…
A:
Q: For the following time series plots, explain what type of transformation, if any, would make the…
A: Probability is the measure of the possibility that an event will occur. Probability can be expressed…
Q: Question 2 You are given the following data based on observations of Y and X. X 5 9 10 15 18 20 24…
A: Regression results SUMMARY OUTPUT Regression Statistics…
Q: Ten economists were asked to predict the percentage growth in the Consumer Price Index over the next…
A: Mean, Mode and Median are the measures of central tendency. They measure where data is more tilted…
Q: Using a standard normal distribution (mean=0, sd=1), calculate the following. (Answers in percentage…
A: A normal distribution with mean =0, and standard deviation =1 is called a standard normal…
Q: If R2 = 1, it means that all of your errors are large O your model is no better at predicting Y than…
A: The R square is a statistical measurement that looks at how variations in one variable may be…
Q: Supposed a study using a random sample of postgraduate students in Sydney found that the average…
A: The population refers to the entire group whereas sample refers to a part of that specific group.…
Q: Classify the following random variable according to whether it is discrete or continuous. The…
A: Discrete variables are those variables which value can be whole number only . Continuous variables…
Q: Consider the following two sample data sets. Set 1: 9763 2 Set 2: 5 10 1397 a. Calculate the…
A: Coefficient of Variation is a measure of dispersion which is the ratio of standard deviation to the…
Q: The height (in inches) of a random sample of players in NCAA Division 1 basketball teams is shown to…
A: X X-Xbar (X-Xbar)^2 75 -1.48 2.19 80 3.52 12.38 75 -1.48 2.19 87 10.52 110.64…
Q: A materials engineer wants to understand the relationship between the strength of plastic cases and…
A: Introduction Coefficient of determination is used for the interpretation of coefficient of…
Q: Use General Linear Process to determine the the autocovariance function of mean funchon and ARca)…
A: A function is a formula that expresses one variable in terms of another.The phrase "y is a function…
Q: Explain whether the empirical evidence supports the claim that “investors are solely concerned with…
A: Mean-Variance Analysis is the method used by investors to make investment decisions based on the…
Q: State the property of an estimator that gives a correct estimate of the population parameter of…
A: The population parameter of interest is that part of the population from which the researcher tries…
Q: Suppose you are a consultant to a fast food chain. The fast food chain is interested in measuring…
A: 1. There are two estimators for the population variance with different levels of bias and variance.…
Q: LA researcher is collecting individual data by asking visitors in a train station in a medium sized…
A: Random sampling: It refers to the method under which the sample is selected on the basis of…
Q: The varjanice of the siope estimator \CAhat(B)_1 V Select ong a. increases as the error variance…
A: Var(B1) = σ2∑xi2 Increase in error variance will increase var(b1) Increase in sampling variation of…
Q: Define Sampling Distribution of the OLS Estimator?
A: OLS Estimation: The estimator that estimates the values of parameters like in the regression is…
Q: As the Country Director of a multi-national company in Ghana, you have decided to conduct a survey…
A: This evaluation will cover one non-probability sampling strategy and two probability sampling…
Q: b) The consumer expenditure on automobiles in a particular developing country is estimated from a…
A: The mean of your estimate plus and minus the variation in that estimate is the confidence interval.…
Q: uppose it is known that in a certain large human population cranial length is approximately normally…
A: Given - mean = 185.6 mm Standard deviation = 12.7mm n = 10
Q: UBC coaching center has two branches in Dhaka: one in Dhanmondi (Branch A) and another one in…
A: A type of hypothesis that tends to propose that there is in turn no difference between a…
Q: Let X1 and X2 be independent, identically distributed random variables from a population with a mean…
A: An unbiased estimator of a parameter refers to an estimator for which the expected value is equal to…
Q: How can we say that Sample Average is the Efficient Linear Estimator of E(Y)?
A: To show that Sample average is the efficient linear estimator of E(Y), we consider the following a…
Q: How does the particle used in FastSLAM differ from the one used in Monte Carlo localization?
A: Particle refers to the least possible amount.
Q: Which of the following random variables has a distribution which most closely resembles a normal…
A: Correct answer is D. The annual income of a US citizen will most resembles a normal distribution.
Q: Suppose that 65% of rural households own a television set. Use an appropriate approximation, the…
A: Given: Probability of success = 0.65 two-thirds of a random sample of 600 could be calculated as:…
Q: A consumer advocate researches the length of life between two brands of refrigerators, Brand A and…
A: Our Hypotheses are Null Hypothesis Ho : µ1 = µ2 Alternate Hypothesis Ha : µ1 ≠ µ2 First option is…
Q: Here are grouped data for heights of 100 randomly selected male students. Find out the skewness and…
A: skewness: Skewness will show the symmetricity of a curve , a curve can have either negatively…
Q: if the relationship between two variables is linear and the coefficient of determination (R2) has a…
A: If the relationship between two variables is linear and the coefficient determination R2 has a value…
Suppose you are going to conduct a sample survey regarding employee job satisfaction on 20 employees from various organizations. What are the various probability sampling methods you may use here? Explain those methods with suitable examples.
Step by step
Solved in 2 steps
- You are assigned to research what 3rd year Wits College students jozi Campus think about the module called Research practice. Keep in mind that there are a total of 300 students who do this module. Therefore, you population is 300 students. You need to choose a sample of 50 students. So, choose any TWO (2) Non-Probability Sampling methods that you can use for this study. Then explain a disadvantage of each method in relation to your study.Classify the following random variable according to whether it is discrete or continuous. The temperature in degrees Celsius on January 1st in Fargo, North Dakota Group of answer choices Discrete ContinuousA political pollster wants to ensure that their poll on attitudes toward separation of church and state gets responses from all major religious groups. What kind of sampling method should be used?
- An econometrics class has 80 students, and the mean student weight is145 lb. A random sample of 4 students is selected from the class, and theiraverage weight is calculated. Will the average weight of the students in thesample equal 145 lb? Why or why not? Use this example to explain whythe sample average, Y, is a random variable ?Ten economists were asked to predict the percentage growth in the Consumer Price Index over the next year. Their forecasts were as follows: 3.6 3.1 3.9 3.7 3.5 3.7 3.4 3.0 3.7 3.4 a. Compute the sample mean. b. Compute the sample median. c. Find the mode.For the following time series plots, explain what type of transformation, if any, would make the variance more stable.
- (PLEASE HELP WITH 1 AND 2) The National Occupant Protection Use Survey (NOPUS) was conducted to provide probability-based data on motorcycle helmet use in the United States. The survey was conducted by sending observers to randomly selected roadway sites where they collected data on motorcycle helmet use, including the number of motorcyclists wearing a Department of Transportation (DOT)-compliant helmet (National Highway Traffic Safety Administration website, January 7, 2010). Sample data consistent with the most recent NOPUS are shown below. Answer questions 8 -10. Type of Helmet Region DOT-Compliant Noncompliant Northeast 96 62 Midwest 86 43 South 92 49 West 76 16 Total 350 170 (Hint: The above table is a cross-tabulation, but the right margin is missing. You will need to calculate the total number of motorcyclists for each region as well as the total number of motorcyclists of all four regions.) 1. What is the…Identify the sampling technique used. A researcher randomly selected 35 of the nation's middle schools and interviewed all of the teachers at each school. A. convenience B. systematic C. random D. stratified E. clusterA newspaper company classifies its customers by gender and location of residence. The research department has gathered data from a random sample of 17561756 customers. The data is summarized in the table below. Gender and Residence of Customers Residence Males Females Apartment 7777 128128 Dorm 5757 214214 With Parent(s) 164164 263263 Sorority/Fraternity House 181181 244244 Other 269269 159159 Copy Data What is the probability that a customer is male and lives in a fraternity house or is female and lives in a sorority house? Express your answer as a fraction or a decimal number rounded to four decimal places.
- A random sample of residents from various income brackets was asked their opinion on tax reform for the country of Guyana. The data so gathered were analyzed by a statistician and the results he obtained using MINITAB are shown below: Expected counts are printed below observed counts Low Middle High Total For 26 (30.67) 75 (51.11) 14 (33.22) 115 Against 60 (69.33) 95 (115.56) 105 (**) 260 Neutral 34 (20) 30 (33.33) 11 (21.67) 75 Total * 200 130 450 Chi-sq = 0.71 + 11.17 + 11.12 + *** + 3.66 + 11.89 + 9.8 + 0.33 + 5.25 = 55.2 DF =??, p-value =??? Carefully define the null and alternative hypotheses of the x2 test underlying the generation of the above table. Find the missing values ‘*’, ‘**’, ‘***’, ‘??’ and ‘???’. What is the conclusion of this test? Give reasons for your answer.Let x be a random variable representing dividend yield of Australian bank stocks. We mayassume that x has a normal distribution with σ = 2.4%. A random sample of 15 Australianbank stocks has a sample mean of x = 6.83%. For the entire Australian stock market, themean dividend yield is μ = 6.9%. Do these data indicate that the dividend yield of allAustralian bank stocks is higher than 6.9%? Use α = 0.05. What is the value of the teststatistic?The management of a large firm would like to know something about employee morale and the other variables to which it may be related. To study these relationships, each employee in a simple random sample of 27 employees is interviewed and tested to obtain information concerning morale level and the average number of satisfying extra work social contacts experienced during a week. Whether or not the duties the employee usually performs are appropriate to the job title is also determined. The dependent variable Y is measure of morale, the quantitative independent variable, X1 is average number of social contacts, and the following dummy variable coding is used to quantify the qualitative variable: X2 = 1 if yes, X2 = 0 if no. The model including dummy variable and the interaction term was being estimated and a part of computer outputs is below: beta std error t p-value 95% CI for B Lower bound Upper bound Constant 260 134.308…