A sports shop selects a random sample and records the sales of items made in China and those made in America. Country of origin n mean St.Deviation China 50 22.5 9.75 America 33 33.15 11.6 What is the SE Mean for the sales from China?
Q: Suppose that you are interested in determining the average height of a person in a large city. You…
A: Standard deviation is a proportion of how much variety or scattering of a bunch of values. A low…
Q: The Philadelphia office of Price Waterhouse Coopers LLP hired five accounting trainees this year.…
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: ..is the best measure of dispersion. .. Select one: Range a. b. Variance Standard Deviation с.
A: Solution: _______________ is the best measure of dispersion. a) Range b) Variance c) Standard…
Q: Suppose you select a random sample of 16 students from a population that has mean of µ = 75 and…
A: Given: µ = 75 , ơ = 20 and n = 16.
Q: Determine the sample variance and standard deviation for the following data. CI 10-14 F 15-19 20…
A: CI x f fx x (x-x) (x-x)2 f(x-x)2 10-14 12 5 60 23.25 -11.25 126.56 632.8 15-19 17 20 340 23.25…
Q: Consider the mean cost of getting a four-year college degree. The middle interval which captures…
A: In this question we have to find out the population mean cost of getting a college degree with the…
Q: If someone's gross annual income has a z-score of positive 2, what can be concluded? Their income is…
A: Z-score of gross annual income=+2 The connection between a value and the mean of a group of values…
Q: Having an extreme score in a sample (outliers) will NOT effect which of the following? standard…
A: The outliers don't influence the median value. This bodes well in light of the fact that the median…
Q: ECONOMETRICS 1. The possible values of a t random variable are: a. From 0 to infinity b. From 1 to…
A: NOTE: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…
Q: According to Chebyshev's theorem, at least what percentage of the observations in a data set will…
A: Chebyshev’s theorem is applied to find out the proportion deviation of the datasets from the means.…
Q: manufacturer fills soda bottles. Perlodically the company tests to see IT there is a difference…
A: A hypothesis test for two population of test statistic means is given by
Q: The reliability of an estimator is assessed in terms of its _____. Select one: a. mean b. ease of…
A: Reliability is the degree to which an assessment tool produces stable and consistent results.
Q: 18. An insurance agent has claimed that the average age of policy-holders who insure through him…
A:
Q: A simple random sample of 37 rolling-and-wheeled backpacks being sold on Amazon had a mean price of…
A: As given sample size = 37 Mean price = $67.49 Population standard deviation = 14.33 Value of 90%…
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: 2) You work for the FTC. A manufacturer of detergent claims that the mean weight of detergent is at…
A: The process by which we decide if a certain hypothesis is true or not is called the test of…
Q: The mean was found to be u = 70 so now we need to find the standard deviation o. The standard…
A: Standard deviation is a measure of spread of data around mean of the data. Higher the standard…
Q: The individual actually The data represent the results for a test for a certain disease. Assume one…
A: The given table is: Yes No Total Positive 132 9 141 Negative 31 128 159 Total 163 137…
Q: Suppose you conduct a test and your p-value is equal to 0.0
A: Given that, p - value = 0.002 . Here we have to conclude on the basis of alpha.
Q: SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on…
A: The mean and standard deviation can be calculated by using the table below. ClassMid-point…
Q: Dr. Diet launched a new diet. He argues that it will make paents lose more than 10 lbs. over 5…
A:
Q: The distribution of annual profit at a chain of stores was approximately normal with mean u =…
A: μ=66000σ=21000
Q: Problems-2: The following data shows birth weights (oz) from seven consecutive deliveries at the…
A: Given: 5,121,138,32,100,58,64
Q: 36 Out of 100 persons interviewed are familiar with the tax incentive given by the governmenti for…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…
Q: A courier company guarantees its customers that the average time to pick up their packages is 20…
A: Process capability index is a statistical tool that measures the ability of any process to produce…
Q: Suppose you apply an estimator to sample data and you get an estimate of 5 for whatever sample you…
A: An estimator is simply is a spread of values around a true parameter. The efficiency of each…
Q: A sample of 20 observations from a normal distribution with standard deviation 4.51 gives a mean of…
A: Given n = 20s = 4.51X¯ = 32.8μ0 =30 (Hypothetical mean)α = 0.05
Q: The mean weekly sales of the chocolate bar in candy stores was 146-3 bars per store. After an…
A:
Q: af the sampled population has a mean of 48 and standard deviation of 16, then respectively the mean…
A: Correlation coefficient - It is the measure of correlation that is present between two variables is…
Q: A company produces lightbulbs with a mean lifetime of 1,200 hours and a standard deviation of 50…
A: Part a) using µ = 1200 and σ = 50 we have the following intervals:[µ ± 1σ] = [1500 ± 1 (50)] =…
Q: I'm assuming for this problem I need to find the z-score first then find the value on the…
A: The given information:
Q: The variance of sample means is:
A: To find : Variance of sample given.
Q: Consider a very large number of students taking a college entrance exam such as the SAT. And suppose…
A: A z-score represents a specific value on the standard normal curve and measures the difference…
Q: onsider the following data: −11,−5,−5,−11,13,−11,−5−11,−5,−5,−11,13,−11,−5 Copy Data Step 2 of 3:…
A:
Q: A sample consist of 12 observations, for all of which a given feature X is measured. If the sample…
A: Wa have sample mean S2=100 and sample size n= 12 given these we can easily find out the value of sum…
Q: Given the following data .Find the OLS estimators using the deviation method. Y 6 10 9 14 7 5 X1…
A: Y X1 X2 6 1 3 10 3 -1 9 2 4 14 -2 6 7 3 2 5 5 4 Using excel, we get the regression…
Q: MY NOTES ASK YOUR TEACHER 9. DETAILS ASWESBE9 8.TB.1.021. 0/1 Submissions Used In order to estimate…
A: The standard error of mean shows the standard deviation of the statistical sample population. The…
Q: Suppose a random sample of size 54 is selected from a population with o = 11. Find the value of the…
A:
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: government study among adults in the 25- to 34-year age group, the mean amount spent per year on…
A:
Q: 1. If the R-square (R2) = 0.4 and the sample size N = 11. Furthermore, suppose that the number of…
A: A regression model provides a function that describes the relationship between one or more…
Q: In one of its Spring catalogs, L.L. Bean advertised footwear on 29 of its 192 catalog pages. Suppose…
A: Standard deviation can be calculated by using the following formula.
Q: Suppose a researcher is interested in a new treatment plan for increasing CD4 cell count in…
A: Given: Sample size (n) = 48 Population mean = 275 Sample standard deviation (s) = 24.6
Q: Every ten years, the census bureau asks people about the number of people living within their…
A: A. Below is the calculation for range. Range = Maximum value - Minimum valueRange = 6 - 1Range = 5
Q: A customer service team receives an average of 376 emails every day. Assume that the standard…
A: Given: Average = 376 Standard deviation = 96 Sample size = 40
Q: Question: It is known that the mean diameters of rivets produced by two firms A and B are…
A:
Q: The state of California has a mean annual rainfall of 22 inches, whereas the state ofNew York has a…
A: Given information for California: Mean=22Standard deviation=5Sample size=30
Q: A recent article in a business journal reported that the mean annual salary for graduates from 30…
A: In this question we have to find out the minimum sample size that would yield such an interval with…
Q: A health expert evaluates the sleeping patterns of adults. Each week she randomly selects 40 adults…
A: * SOLUTION :-
A sports shop selects a random sample and records the sales of items made in China and those
made in America.
| Country of origin | n | mean | St.Deviation | |||||
| China | 50 | 22.5 | 9.75 | |||||
| America | 33 | 33.15 | 11.6 | |||||
What is the SE Mean for the sales from China?
Step by step
Solved in 2 steps
- Given the following data .Find the OLS estimators using the deviation method. Y 6 10 9 14 7 5 X1 1 3 2 -2 3 5 X2 3 -1 4 6 2 4TRUE OR FALSE. When heterosdasticity is present OLS estimators are still BLUE.The following temperatures (in oF) were recorded inside the building of a remote pumping station: 99, 87, 93, 90, and 96. The variance of these readings is closest to: (a) 11.7 (b) 22.5 (c) 31.1 (d) 38.6
- a. 36 Out of 100 persons interviewed are familiar with the tax incentive given by the governmenti for installing solar panel, construct 96% confidence interval for true proportion. b. The average wages of 25 employees of a company are RS. 2500 with standard deviation of Rs. 250. Assuming wages to be normally distributed, calculate 98% confidence upper bound for the average wages and interpret it.A total of 280 observations of Bob Ramos, an assembly-line worker, were made over a 40-hour work week. The sample also showed that Bob was busy working (assembling the parts) during o 230 bservations. (Round all intermediate calculations to at least two decimal places before proceeding with further calculations.) The number of observations that need to be taken of Bob to be 99% confident with 4% acceptablee error=The average cost of tuition plus room and board for a small private liberal arts college is reported to be $8500 per term but I financial administrator boys that the average cost is half a study conducted using 350 small liberal arts colleges showed that the average cost per term is $8745 the population standard deviation is $1200 let a =0.05.what is the p-value for this test
- Calculate the sample size to study the average age of a Central State College student, plus or minus 0.4 years. We’d like to be 85% confident about our result. From a previous study, we know that the standard deviation for the population is 2.8.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.The state of California has a mean annual rainfall of 22 inches, whereas the state ofNew York has a mean annual rainfall of 42 inches (Current Results website, October 27,2012). Assume that the standard deviation for both states is 4 inches. A sample of 30 yearsof rainfall for California and a sample of 45 years of rainfall for New York has been taken.a. Show the probability distribution of the sample mean annual rainfall for California
- the answer is (1,3)SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of Internet users. Find the mean and the standard deviation. (Round squared deviations to nearest whole number and final answer to 2 decimal places.) Age (years) Frequency 10 up to 20 3 20 up to 30 7 30 up to 40 18 40 up to 50 20 50 up to 60 12Let 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?