If an estimate of a population parameter is given by a single value, then the estimate is called
Q: Using the given result/data, create a discussion with backup related literature.
A: The given data is a Likert scale analysis which analysis the responses of the customers regarding…
Q: ignificance is referred to as "independent of observations". Explain this assumption.
A: The assumption of independence is used for T tests, in ANOVA tests, and in several other statistical…
Q: The sum of all the relative frequencies of a distribution is ________
A: Relative frequency: The relative frequency is obtained as: relative frequency = class…
Q: Prove the general formula for interval estimation of ratio of population variance.
A: Statement:- If x1,x2..... xn ~ N(μx, σx2) and y1, y2 .....ym ~ N(μy , σy2) are independent random…
Q: "Based on recent data, 80% of all part-time college students are female. A survey of 1000 college…
A: Parameter:A parameter is a function of observations in a population. It is an numerical quantity…
Q: There are 3 kinds of estimation approaches
A: There are more than 3 kinds of estimation approaches like as Maximum likelihood Method , Method of…
Q: A numerical measure computed using data from the entire population set of elements is called: A)…
A: We have to find correct option for the given data ..
Q: According to the World Bank’s year 2015 estimates of the Poverty Overview, 10% of the world…
A: Solution: From the given information, population proportion is 10%, sample proportion is 0% and…
Q: If the distribution of the data is normal, then…
A: A normal distribution is a common probability distribution. The normal distribution is a continuous…
Q: The sample mean, x is called a of the population mean u Interval estimate
A: The sample mean from a group of observations is an estimate of population mean. Given a sample size…
Q: A company regularly takes deliveries of a particular sensitive part from three subcontractors A, B,…
A: Given:
Q: True or false: Discuss if False Heterosdasticity results to inefficiency of the OLS estimates which…
A: If the data points are scattered in an unequal variable manner around the predictors, then the…
Q: Step 5: There sufficient evidence to conclude that
A: Given : x1= 68.0 n1= 240 x2= 43.0 n2= 151 significance level, 0.01
Q: The sample is actually 55. what is the critical value?
A: It is given that the sample is 55 and there are three treatments.
Q: Comparing a census of a large population to a sample drawn from it we expect that the
A: We know, Sample is usually a more practical method of obtaining the desired information.
Q: Give and explain one way to find minimum variance unbiased estimator.
A: Minimum variance unbiased estimator (MVUE):An unbiased estimator that has lower variance than any…
Q: Prachi rolls a die a number of times and records her outcomes in a bar graph as shown in Figure…
A: From the graph, the frequency of getting each number in the die is given in the table form below.…
Q: A number resulting from the manipulation of raw data according to certain specified procedures is…
A: Parameter:Any statistical measure based on all units in the population or computable characteristic…
Q: What is the statement regarding a population parameter formulated for the sole purpose of being…
A: A hypothesis test.
Q: What is the purpose of Least Squared Criterion?
A: Least Square method is used to obtain the line that best fits the given data points by minimizing…
Q: Even if the population distribution is unknown, we can assume that the shape of the distribution of…
A: 1): Unknown population distribution: # The general rule is that if n(Sample size) is more than 30,…
Q: 2. Two different statistics, Statistic A and Statistic B. are used to estimate the same population…
A: Here the data is similar to symmetric (very less bias) . Statistic A has less variability (lesser…
Q: How is an estimation of parameters used in real-life situations? 2.) How important is making…
A: Population consists the set of all units of interest. Sample is a subset of the population. The…
Q: 3. What percentage of College students have made at least one online purchase in the last three…
A: a) The aim of the study is to determine the percentage of college students have made at least one…
Q: Consider a variable of several populations. Define the terms homogeneous and nonhomogeneous in this…
A:
Q: The best point estimate of population mean is?
A: Best Point estimation requires the use of survey data to measure a single value (also known as a…
Q: In the real world, what are some examples of data sources that, even with large sample sizes, will…
A: The Central Limit Theorem says that when the mean of the samples are taken then it is approximately…
Q: The . distribution might be used if one cannot guess much about the process to involve in a…
A: If we know only the minimum and maximum values of the data then the most useful distribution for the…
Q: What is formula for t RATIO FOR A SINGLE POPULATION MEAN?
A:
Q: Since the population size is always larger than the sample size, then the sample statistic can never…
A: Since the population size is always larger than the sample size, then the sample statistic Sample…
Q: The midpoint of any set of observed values is
A: To define the midpoint of the data set.
Q: is the difference between the estimated value from the sample (sample statistic) and an actual value…
A: There is some difference exist between sample statistics and population parameters
Q: What measure of central tendency is calculated by adding all the values and dividing the
A: Common measures of central tendency are 1)Mean 2)Medin 3) mode
Q: Hypothesis is a claim about the population parameter.
A: Answer: A parameter that describes the population. It is a fixed Number, but in practice we do not…
Q: ecause population parameters are typically unknown, we use the ______ to estimate the value of the…
A: In this, case we need to fill the correct answer.
Q: Prove an efficient estimator for the average of a normal population
A: X~ Normal with mean= mu and variance= sigma^2 Find efficient estimator for the mean
Q: An assumption made about the value of a population parameter is called a
A: Given that Statement : An assumption made about the value of a population parameter We know that…
Q: Based on the hourly incomes (in US dollars) of employees in two different branches at Citibank,…
A: Variability refers to the spread of the data . It allows us to compare two datasets.
Q: Figure 1 shows sample means from samples of size n=100 from a population. Estimate the value of the…
A: It is given that sample size (n) is 100.The given graph shows that the sample means of a population,…
Q: True False When you test for differences between the moons of two independent populations, you can…
A: We have given that a statement in which we have to find out that the given statement is True or…
Q: The midpoint of any set of observed values Is
A: to find the midpoint of any set
Q: To estimate population mean, it is better to use point estimate rather than interval estimate !…
A: We know that, To estimate population mean, point estimate is better than interval estimate.
Q: If we could not measure the population mean, we could use the sample mean as a point estimator of…
A: Given: we could not measure the population mean, we could use the sample mean as a point estimator…
Q: The population mean will always be the same as the mean of all possible X that can be computed from…
A: Solution Ans is True
Q: normally distributed data set has
A: Given that a normally distributed data set has a mean of 0 and a standard deviation of 2.
Q: A type of numerical data with countable elements is nominal data O
A: In statistics, various types of variables are studied. There are two types of variables that are…
Q: The area of inferential statistics called hypothesis testing is a decision-making process for…
A: Introduction: Inferential statistics is the branch of statistics, that is involved in making…
Q: The difference between estimates and population parameters is known as: O a. formula error
A: Sampling errors are errors that occur in the process of collecting a sample.
Step by step
Solved in 2 steps