A tax collector wishes to see if the means of the values of the tax exempt properties are different for two large cities. The data are given in millions of dollars, use α = 0.05. Assume the populations are normally distributed with unequal variances. City A 113 25 44 31 22 23 11 19 14 2 City B 295 82 16 5 50 81 4 11 1) State the hypotheses. 2) Find the test statistic and Compute the critical value(s), then draw and label the curve. 3) Make the decision and Summarize the results.

Q: population variance

A: null hypothesis :there is no significance difference  in medicine relieves pain in 318 seconds…

Q: Compute for the variance of all the data on Table 2. Show your solution and  answer inside the box.…

A: Given are three sets of data, namely for student A, B and C: Enter data in Excel and calculate mean…

Q: 2. Consistency is key. Whenever we say that a product is of better quality, it 1 refers to the…

A: Solution In the question the researcher wants to test the the variability  life of the new battery.

Q: Which is the correct answer? The role of the covariate is to:  a.  Compare variables of interest…

A: Covariate: Covariates aredefined as the participants in an experiment. It is an independent…

Q: The better-selling candies are often high in calories. Assume that the following data show the…

A: The data for samples of three types of chocolates are given as- M&M's Kit Kat Milky Way II…

Q: The accompanying table provides theoretical data on marital status and income bracket for a random…

A: The data shows the marital status and income bracket for a random sample of adults age between 20…

Q: I test the effect of temperature of a manufacturing process on the lifetime of its product, I…

A: Given:   100 degree 110 120 200 degree 110 130 300 degree 120 120 400 degree 110 120

Q: (I have answered 1 a) but I don't understand b) I have given you the table and will provide you with…

A: The linear regression analysis examines the linear association between independent variables and…

Q: Choose the best description based on the figure below. Data set (A) Data set (B) x₁ = 25.2 x₂ = 27.8…

A: It is required to identify the best description of the given figure representing the two data sets A…

Q: The homogeneity of variance assumption requires that: A. the sample variance is equal to the…

A: The assumption of homogeneity of variance is that the variance within each of the populations is…

Q: Assume that the two samples are independent simple random samples selected from normally distributed…

A: Here we've to test that if there is a statistical significant difference between means.  So H0:…

Q: An analysis of variance produces SStotal = 100 and SSwithin treatments=40. For this analysis, what…

A: The question is about ANOVA Given : SSTotal = 100 SSwithin treatments = 40   To find : Value of…

Q: To obtain a maximum amount of variance, an item ought to have a degree of difficulty of what?

A: To obtain a maximum amount of variance an item ought to have a degree of difficulty is the number of…

Q: The average stock price for a company is $30, and the variance is 67.24. Assume that the stock…

A: From the provided information, The average price for a company is $30 and variance is $67.24. That…

Q: Find the standard error,  t statics Sample variance = .67 Sample size = 30 Population  size = 60…

A: Given information- Sample variance, s2 = .67 So, sample standard deviation, s = 0.819 Sample size, n…

Q: Chemist Ellen has developed four different types of fertilizers for trees. She used the fertilizer…

A: The one-way analysis of variance is a statistical technique used for the comparison of more than two…

Q: 2. Report the statistical results for a three sets of data in APA style.

A: The statistical results for a  sets of data in APA style must be reported.

Q: Daily time spent (in minutes) on the website for 30 males 210 930 30 30 10 5 690 300 60 210 210 45…

A: The given sample observations for spent time (in minutes) by 30 male students is: The given sample…

Q: Suppose that you draw a random sample from a population where you know the population mean is 36 and…

A:

Q: Jessica hypothesizes that giraffes will look longer at human infants than at adults. In her zoo, she…

A: It is given that Jessica hypothesizes that giraffes will look longer at human infants than at adults…

Q: Use the following scores on excel for students two quizzes. Quiz A and Quiz B. See whether the…

A: Solution To test whether the population variances are equal or not we will use F test and run the F…

Q: An economist wants to test if there is any difference in income between Escambia county and…

A: From the provided information,

Q: Suppose that we have disjoint normal populations A and B and we want to find the standard error…

A: Denote μ1, μ2 as the true averages of populations A and B, respectively.

Q: A value of r2=.09 is considered what for the effect size test of the percentage of variance…

A: Given, r2=0.09

Q: 3. Assume that you want to test the claim that the paired sample data come from a population. Use…

A: Given, sample size = n = 10 sample mean of difference = x¯d = -0.9 Sample standard deviation of…

Q: the mean of Population 1 is greater than the mean of Population 2.

A: Definition of independent of two Population mean: The independent t-test, it is also called the…

Q: Assume that the population consists of only these eleven data points for y and z. Construct one…

A: It was stated to assume that the population consists of only these eleven data points for y and…

Q: Four salesman were posted in difference areas by a company. The number of units of commodity x sold…

A: Given: Test-statistic F = 3.89 Rejection region: If Test-statistic > Critical value, Reject H0.

Q: Test the claim that the samples come from populations with the same mean.  Assume that the…

A: There are 3 independent samples which are brand 1, brand 2 and brand 3. We have to test whether…

Q: The scores in a high school are normally distributed with a variance of 225. Suppose that 27.43% of…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: The variance in a production process is an important measure of the quality of the process. A large…

A: Given: n1 = 25 n2 = 22 α = 0.05 Formula Used: Test-statistic F = s12s22

Q: The marketing manager of a large multinational corporation is concerned that some salespersons…

A:

Q: Mutual fund A claims that it had better performance than mutual fund B in terms of volatility over a…

A: To test :   H0 : volatility of mutual fund A is equal to that of mutual fund BvsH1 : volatility of…

Q: We want to compare two population variances and draw a sample from each population for this purpose.

A: The two population variances are to be compared and sample from each population are drawn for this…

Q: Are nursing salaries in City A lower than those in City B? As reported by a newspaper, salary data…

A: From the provided information,

Q: Four Engineering teams played last weekend. The following are the descriptive measures of their…

A:

Q: 2. Suppose the weight of fish caught from the Santa Monica Pier is normally distributed. From a…

A: Given:true (population) mean µ = 24sample size n =20sample mean x̄ = 22sample variance s2 =…

Q: An analysis of variance is used for the following data. What will happen if the value of M1 is…

A: The given values are, M1 = 15; M2 = 25; SS1 = 90 and SS2 = 70. The value of M1 changed to 20.

Q: A factor in determining the usefulness of an examination as a measure of demonstrated ability is the…

A: Given Information: The random sample of newly graduated law students, n=20 The sample standard…

Q: all possible samples each of size 2 from the population 12, 6, 24, 30, 18 using sampling with and…

A: Given, Population size: 12, 6, 24, 30, 18

Q: The next test is a t-test for unequal variance. Here is the problem: The human resources department…

A: let cost of one bedroom apartment in NoBo  be x and SoBo y, calculate sample mean and sample…

Q: A researcher takes sample temperatures in Fahrenheit of 18 days from Pittsburgh and 16 days from…

A: Given that, a researcher takes sample temperatures in Fahrenheit of 18 days from Pittsburgh and 16…

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: Let μ denotes the population mean number of sick days an employee takes per year. The test is that…

Q: which of the following excel functions would you use to answer this question "Is the number if…

A: We are asked about which test will be used for comparing the number of applications accepted for…