Two random samples were drawn from two normal populations and their values were. Test whether the two populations have the same variance at 5 % level of significance

Q: Consider the following table: Source SS DF MS Test Statistic Regression    6 745.77    Error…

A: The total sum of squares is 12359.72.

Q: A civil engineer tested two different types (A and B) of a special reinforced concrete beam. He made…

A: 1. The hypotheses are given below: Null hypothesis: H0: There is no real difference between the two…

Q: Suppose that we have disjoint normal populations A and B with equal but unknown population…

A: Given that the two  disjoint populations A and B with equal but unknown variances. The sample size…

Q: Suppose the yield (lb/acre) of corn from 2 types of soil is studied for years and the means  and…

A: Type A Type B Mean   4500  3900 Variance 455,625 152,100  , For part a) n1 = 10 and n2 =…

Q: In testing the lethal concentration of a chemical found in polluted water, it is found that a…

A: a)

Q: Consider the following table: Source SS DF MS Test Statistic Regression    6 745.77    Error…

A: The table shows the ANOVA table.

Q: The homogeneity of variance assumption stipulates that, O the two samples have equal variances O…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: A high school principal claims that the variance in the GPA of students in the graduating class iS…

A: We have given that,  Sample variance (s^2) = 0.21 Population variance (σ^2) = 0.39 Sample size (n) =…

Q: If a student scored 70 points on a test where the mean was 66 and the student's z-score was 0.42,…

A:

Q: Two random samples were drawn from two normal populations and their values are : A : 66 67 75 76 82…

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Q: You are running an Analysis of Variance to test if there is a difference in hourly rates of three…

A: Given: Total sample size N = 15 Significance level α = 0.025 Formula Used: F-statistic = MSBMSW MSB…

Q: Consider a study in which the sum of squares (SS) based on an experimental group of 30 participants…

A:

Q: A random sample of the number of games played by individual NBA scoring leaders is shown. Is there…

A: The mean and variance is calculated as follows:

Q: A recent article reported “A one-way analysis of variance found that GRE scores varied according to…

A: We have to  fill blankets.

Q: A sample of 60 items from population 1 has a sample variance of 8 while a sample of 40 items from…

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Q: Two random samples were drawn from two normal populations and their values are : A : 66 67 75 76 82…

A:

Q: weight of 450kg with a variance of 70. A sample of 149 female lions had an average weight of 250kg…

A:

Q: Consider the following data: x 44 55 66 77 88 P(X=x)P(X=x) 0.30.3 0.20.2 0.20.2 0.10.1 0.20.2 Copy…

A: Given :  Data values  x 44 55 66 77 88 P(X=x) 0.30 0.20 0.20 0.10 0.2 x*p(x=x): 13.2 ,…

Q: A large marketing firm uses many photocopying machines, several of each of four different models.…

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Q: A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is…

A: A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is…

Q: Suppose P(X E {1,2,3})=1 and E(X) =2.5. What is the smallest and largest possible values for the…

A: P(x=i) =pi where i = 1,2,3 Since P(X belongs to {1,2,3}),  p1+p2+p3 = 1…

Q: The following table shows the results of an analysis of variance comparing 3 treatment conditions…

A: The sample size is n = 5.

Q: The following table gives the random sample of marks scored by students in two schools, A and B.…

A:

Q: State the alternative hypothesis. a. Ha : σ^2 > 1.6 b. Ha : σ^2 < 1.6 c. Ha : σ^2 ≠ 1.6   2.…

A: Given that  Sample size n =30 Sample variance =2.3 Population variance =1.6 NOTE:- According to…

Q: An insurance company keeps a record of insurance plans sold per day for the past 150 days, as…

A: Solution: x =Number of Insurance plans sold per day  f= Frequency of occurance  x  (f) x2 fx fx2…

Q: A sample of n =25 means  has a variance of 36. What is the standard error for the sample means?…

A: Sample size, n = 25 Variance = 36 We know that, Standard deviation = VarianceStandard deviation…

Q: Consider the five-product line produce products with the same weight (grams). Test the hypothesis of…

A: If there is homogeneity of variance then we use the Bartlett test. Here we check whether the…

Q: Suppose we have two groups of students, those who go for tutoring help and those who do not. The…

A:

Q: The F-statistic from an ANOVA is essentially a ratio of _________ variance. Effect/Total

A: Formula: The formula for F statistic in ANOVA is, F=Mean sum of squares for treatment(effect)Mean…

Q: Suppose that 67% of college students in Australia use more than 1.65 gigabytes of data on their…

A:

Q: What term requires the variance of a person’s scores at time 1, time 2, and time 3 be equal?…

A: Variance is equal in a statistical test like analysis of variance also known as ANOVA. It assumes…

Q: A group of 8 students reported the number of hours they studied for their MTH107 test. The results…

A: Given:-   A group of 8 students reported the number of hours they studied for their MTH107 test. The…

Q: A senior accounting major has job offers from four CGA (certified general accountant) firms. To…

A: ANOVA is a hypothesis testing method used to check for the means of the factors are all equal.

Q: . A senior accounting major at Midsouth State University has job offers from four CPA firms. To…

A: 13) It is given that the F-statistic is 2.36 and the p-value is 0.133.

Q: 7. In a study on the effect of exercise, ten patients had the following records: Previous Weight…

A: "Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: From a population with a variance of 900, a sample of 225 items is selected. At 95% confidence, what…

A: Given,

Q: Student 12 3 4 5 6 7 8 Score 66 59 70 83 82 73 85 74 Find the mean Ju and variance S2 of the…

A: Student 1 2 3 4 5 6 7 8 Score 66 59 7 83 82 73 85 74

Q: A researcher takes sample temperatures in Fahrenheit of 16 days from Miami and 14 days from Atlanta.…

A: For Miami :  sample size (n1) = 16sample mean (x̄1)  = Σx1 /n1                             =…

Q: The time it takes (in minutes) to treat randomly selected patients in an emergency room at hospital…

A: Given : The time it takes (in minutes) to treat randomly selected patients in an emergency room at…

Q: If Y is Normally distributed , and p(y 200 ) = 0.03 then the values of the mean and variance of Y ,…

A: Given : P(y &lt; 170) = 0.14 P(y &gt; 200) = 0.03 Y is normally distributed.

Q: Assume the mean and variance of 5 observations are 1 and 5, respectively. If 5, as one of these five…

A: Given : mean = 1 variance = 5

Q: find the variance for the given data 7 7 2 5 1

A: The mean of the data can be calculated as:

Q: The following table shows the results of an analysis of variance comparing three treatments. What is…

A: Solution: Given information: Sum of square of between = SSbetween = 40Sum of square of within =…

Q: Detergent A B в с C D 77 74 73 76 81 66 78 85 61 58 57 77 76 69 64 69 63 Assuming all whiteness…

A: Given Data : Detergents A B C D   77 74 73 76   81 66 78 85   61 58 57 77   76   69 64…

Q: The following set of data is given 2; 4; 5; 3; 6; 2; 3 Determine the value of coefficient of…

A: It is an important part of statistics. It is widely used.

Q: We are interested in determining whether or not the variances of the sales at two music stores (A…

A:

Q: It is known that the probability of winning Galatasaray Professional Football Team in matches is…

A:

Q: A researcher designed a study to test whether caffeine use enhanced performance time to run a 100…

A: t-test: If the given sample size is less than or equal to 30 then that is a small sample test.…

Q: The nicotine content in miligrams of two samples of tobacco were found to be as Lallows: 25 26 21 27…

A:

Q: Consider the five-product line produce products with the same weight (grams). Test the hypothesis of…

A: The null hypotheses is that the variance is the same for all product lines. The alternate hypothesis…