A car dealership looks back at their previous year’s sales records. Last year, the dealership sold 422 vehicles. The mean sales price was $24,500 with a standard deviation of $12,875. The dealership also discovered that the distribution of the sales prices is skewed to the right. If the dealership were to select repeated random samples of 40 vehicles from the population of all vehicles sold last year and calculate the average sale price for each sample of 40, which of the following gives the correct mean and standard deviation of the sampling distribution of the sample mean? (A) Mean = $24,500, Standard deviation = \frac{12,875}{\sqrt{40}}40​12,875​ (B) Mean = $24,500, Standard deviation = \frac{12,875}{40}4012,875​ (C) Mean = \frac{24,000}{\sqrt{40}}40​24,000​, Standard deviation = 12,875 (D) Mean = \frac{24,000}{40}4024,000​, Standard deviation = 12,875 (E) Cannot be determined because the sample size is small.

Q: In preparation for the upcoming school year, teacher looks at raw test scores on the of looking at…

A: Given, mean µ = 202 standard deviation (σ) = 38.2  Let 'x' be a random variable i.e. x~Normal(µ,σ)…

Q: An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for…

A: Range:The range is the difference between the largest and smallest values of the data distribution.

Q: A professor believes that, for the introductory art history classes at his university, the mean test…

A: The objective of this question is to test the professor's claim that the mean test score of students…

Q: The number of people killed in 50 cities from passenger vehicle crashes for a quarter year is shown.…

A: SAMPLE DATA 778 1067 818 1093 730 705 690 655 914 814 809 826 592 762…

Q: Find a. the​ mean; b. the deviation from the mean for each data​ item; and c. the sum of the…

A: Given that Data items : 2.50​, 3.60​, 2.70​, 2.30​, 3.90 Sum of data values = 2.50 + 3.60 + 2.70 +…

Q: Calculate the range, population variance, and population standard dev espectively, for the following…

A: Answer Given,-5, 6, 3, -5, -7, -7, 8, -25The sample size [n] = 8

Q: Use the following table to answer questions 1- 8. The numbers represent the points scored in 12…

A:

Q: A professor believes that, for the introductory art history classes at his university, the mean test…

A: The question is about hypo. testing Given : Randomly selected no. of students in evening class ( n1…

Q: The owner of a minor league baseball team pays the nine starting​ players, the​ manager, and two…

A: x (x-xbar)^2 70 16900 100 10000 135 4225 175 625 185 225 190 100 205 25 210 100…

Q: A professor believes that, for the introductory art history classes at his university, the mean test…

A: In hypothesis testing, we start by stating the null hypothesis (H0) and the alternative hypothesis…

Q: he following table gives the extra travel time in hours for peak-period travelers in urban areas…

A: x¯ = ∑xn (Average) _______________ s = ∑(x-x¯)2n-1 (Standard dev)

Q: The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million…

A: We have given that  Sample sizes n1= 40 , n2= 35  Sample means xbar1= 3.2 , xbar2=1.9  Standard…

Q: Calculate the mean and SS(sum of squared deviations) for each of the following sets of scores.…

A: Given data ,Set A : 2,6,3,1Set B : 2,4,1,3

Q: The following data are the GPA’s of 12 students at State University. Determine the mean, median,…

A:

Q: A sample of 111 motels is selected from a large urban area and the price for a night of lodging for…

A: Suppose the random variable x defines the price for a night of lodging for a single room for each…

Q: A parenting magazine reports that the average amount of wireless data used by teenagers each month…

A: State the null and alternative hypotheses for the test. Fill in the blank below. H0: μ=6:…

Q: A consultant has three sources of income—from teach- ing short courses, from selling computer…

A: To find: the mean and standard deviation of his total an- nual income.

Q: A professor believes that, for the introductory art history classes at his university, the mean test…

A: To draw a conclusion and interpret the decision for the given hypothesis test, we need to follow…

Q: semiconductor manufacturer produces devices used as central processing units in personal computers.…

A: The given data is  680 669 719 699 670 710 722 663 658 634 720 690 677 669 700 718 690 681 702 696…

Q: A professor believes that, for the introductory art history classes at his university, the mean test…

A: The given claim is that the mean test score of students in the evening classes is lower than the…

Q: A professor believes that, for the introductory art history classes at his university, the mean test…

A: The given values are:Sample size of Population 1 (evening classes), n1 = 150Sample mean of…

Q: Health care issues are receiving much attention in both academic and political arenas. A sociologist…

A: The mean is 74 and the standard deviation is 9.7.

Q: The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million…

A: From the provided information,

Q: A random sample of 50 wheat producers from the Earth Kingdom are selling their product at an average…

A: From the provided information,

Q: The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million…

A: The sample standard deviations are s1=2 and s2=1.5.

Q: Assume that the heights of American men are normally distributed with a mean of 69.1 inches and a…

A: From the given information we find the solution

Q: The ages of the patients of a pediatrician were surveyed, summarize and displayed in the…

A: Given that, The ages of the patients of a pediatrician were surveyed, summarize and displayed in the…

Q: The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million…

A: Central limit theorem states that as the sample size become large(>30), the distribution of…

Q: university health officials are interested in determining the average number of hours of sleep…

A: 1. Number of students selected = 200

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.