Question

Why Stochastic error term must be present in a regression equation?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Regression

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: Chapter 08, Section 8.2, Problem 022

A:  

Q: An obtained chi square of 10.78 has been calculated. Critical Chi square is 3.841. What should be co...

A: Solution: State the hypotheses. H0: The variables are independent. Alternative hypothesis: H1: The v...

Q: Two dice are rolled. Determine the probability of the following. Rolling an even number or a number ...

A: Note: Hey there! Thank you for posting the question. For calculating probability, we are considering...

Q: 12. ANOVA for Verbal SAT as a Predictor of GPAHow well does a student’s Verbal SAT score (on an 800-...

A: Part (a): The estimated regression equation is as follows: GPA = 2.03 + 0.00189 Verbal SAT. Predict ...

Q: Hallux abducto valgus (call it HAV) is a deformation of the big toe that often requires surgery. Doc...

A: Solution: The given information is that the angle of deformity in 38 consecutive patients under the ...

Q: 28. A math class consists of 25 students, 14 females, and 11 males. Three students are selected at r...

A: The probability that  two females are selected, then one male is 0.145

Q: A sample of manufactured items will be selected from a large population in which 8 percent of the it...

A: Solution: The sampling distribution of the sample proportion to be assumed approximately normal when...

Q: Trying to encourage people to stop driving to campus, the university claims that on average it takes...

A: The provided sample mean is x¯= 25 and the known population standard deviation is s =6, and the samp...

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard...

A: Click to see the answer

Q: A single card is drawn from a standard deck. Find the probability of the following event. (Enter you...

A: Introduction: The probability of an event in an experiment is the number outcomes in the experiment ...

Q: A human resources manager at a company based in a major city wants to determine whether there is a d...

A: Solution: It is required to find the test statistic and the p-value for the given data. it is given ...

Q: The mayor of a town has proposed a plan for the annexation of a new bridge. A political study took a...

A: Click to see the answer

Q: Using traditional methods it takes 107 hours to receive an advanced flying license. A new training t...

A: State the hypotheses. That is, there is no evidence to conclude that the mean technique lengthens t...

Q: For the data in the table, find the mean and the median of the monthly high temperatures. Then do th...

A: The given high temperatures are, 17, 23, 30, 41, 54 The mean of the high temperatures is, Median: F...

Q: According to a recent​ survey, 53% of adults say they never wear a helmet when riding a bike. Suppos...

A:  

Q: 8) Determine the following probabilities given a normal x- distribution(convert to z first): (a) u i...

A: Click to see the answer

Q: Chapter 08, Section 8.2, Intelligent Tutoring Problem 011 For a data set obtained from a sample of s...

A: Click to see the answer

Q: i need help step by step how to solve this i do not understand the process here. Conduct a hypothesi...

A: Click to see the answer

Q: Suppose 45% of the doctors in a hospital are surgeons. If a sample of 844 doctors is selected, wh...

A: Solution: From the given information, the probability of the doctor in a hospital is a surgeon is 0....

Q: In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one yea...

A: In a study, 39 were smoking after the treatment and 32 were not smoking one year after the treatment...

Q: A manufacturer of banana chips would like to know whether its bag filling machine works correctly at...

A: We are given the following data: Population mean μ = 418 Sample mean x̅ = 417 Sample size n = 48 Pop...

Q: In a packing plant, a machine packs cartons with jar. A salesperson claims that the machine she is s...

A: Click to see the answer

Q: In hypothesis​ testing, if we increase the probability of a Type II​ error, then the power of the te...

A: Type 2 error - Fails to reject the null hypothesis. ( That is actually false in the population) Powe...

Q: A jar contains 4 red marbles numbered 1 to 4 and 10 blue marbles numbered 1 to 10. A marble is drawn...

A: It is given that a jar contains 4 red marbles numbered from 1 to 4 and blue marbles which are number...

Q: A manager for an insurance company believes that customers have the following preferences for life i...

A: Obtain the value of the test statistic. The value of the test statistic is obtained below: The for...

Q: Hallux abducto valgus (call it HAV) is a deformation of the big toe that often requires surgery. Doc...

A: The mean value for the given sample observations is 25.26 and it is calculated by using Excel functi...

Q: An educational researcher wishes to know if there is a difference in academic performance for colleg...

A: Obtain the value of the test statistic. The value of the test statistic is obtained below: The expe...

Q: Assume the girths (circumferences) of five year old oak trees in the Jefferson National Forest are n...

A: Let a random sample of 5year old oak tree is selected. Let x be the no. of oak trees Given x~N(18.5,...

Q: In a survey of 952 respondents, 620 of them voted in a recent election. Find a 95% confidence interv...

A: From the provided information, Number of respondents (n) = 952 Number of respondents who voted in a ...

Q: We have provided a normal probability plot of data from a sample of a population. In each case, asse...

A: Requirement for normal distribution: If the plot is roughly linear, then the variable is approximate...

Q: The Phillies were accused of cheating their beer customers by not putting enough beer in their 12 oz...

A: Null and the alternative hypothesis: Significance level, The value of test statistic is,

Q: I have a statistics question which on attached image.

A: Given that,

Q: Suppose a candy company representative claims that colored candies are mixed such that each large pr...

A: Obtain the degrees of freedom. The degrees of freedom is obtained below: Thus, the degrees of freed...

Q: In each part, we have given the significance level and the P-value for a hypothesis test. For each c...

A: Decision rule: If p-value ≤ α, then reject the null hypothesis. Otherwise, fail to reject the null h...

Q: A fitness center is interested in finding a 98% confidence interval for the mean number of days per ...

A: Click to see the answer

Q: A random sample of six advertisements taken from Scientific American had the following fog indices (...

A:  

Q: Time taken by a randomly selected applicant for a mortgage to fill out a certain form has a normal d...

A: Obtain the probability that the sample average amount of time taken on each day is at most 11 min: I...

Q: 13. More Computation on Points and Penalty Minutes in HockeyThe dataset OttawaSenators contains info...

A: a) From the given information Standard deviation of the error term is given by b)  standard error o...

Q: A study found that the heights of college males follow a normal distribution with a mean of 70 inche...

A:  

Q: According to Table , the area under the standard normal curve that lies to the left of −2.08 is 0.01...

A: Given Information Area under the normal curves gives the probability. Total probability is 1 P( Z &...

Q: A manufacturer of potato chips would like to know whether its bag filling machine works correctly at...

A: Null hypothesis: Alternative hypothesis:

Q: A fast food restaurant just leased a new freezer and food fryer for three years. The service contrac...

A: Click to see the answer

Q: Chapter 08, Section 8.4, Problem 060a Determine the most conservative sample size for the estimation...

A: Problem 060 a Obtain the sample size of a no preliminary estimate for p. The formula of sample size ...

Q: Using traditional methods it takes 91 hours to receive an advanced flying license. A new training te...

A: Click to see the answer

Q: For a confidence level of 95% with a sample size of 28, find the critical t value.

A:   where n=sample size  

Q: Thickness measurement ancient prehistoric Native American Pot Shards discovered in Hopi Village are ...

A: Standard normal distribution: The standard normal distribution is a special case of normal distribut...

Q: A hypothesis test was conducted to test whether more than​ 50% of recent college graduates had a job...

A: Claim: Test whether more than​ 50% of recent college graduates had a job offer prior to graduation. ...

Q: The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3. f. Use p-Valu...

A: The mean for the given data can be obtained as follows: The standard deviation is as follows:

Q: I have a statistics question which is on attached image.

A: Solution: Let X be the amount of Jen’s monthly phone bill. From the given information, X follows nor...

Q: A Nielsen Company report states that the mean number of TV sets in a U.S. household is 2.24. Assume ...

A: Obtain the probability that the number of TV sets is greater than 2 in that household. The probabili...