Two samples are selected from a population, and a treatment is administered to the samples. If both samples have the same mean and the same variance, you are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.​  true or false?

Q: If the mean of the random variable x is larger than the mean of the random variable y, then the…

A: We have to answer question related to mean and variance.

Q: If the standard Z value of a random Ferdin drawn from a normal distribution populason with an…

A: Given  Mean=mu=80 Variance=sigma^2=400 Z=1.2

Q: 6. Suppose that two populations have equal population variances but are of different 10,000,000.…

A: Given that two populations have equal population variances but different have different sizes N1 =…

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A: Given the statement to fill up: When the variance for the difference scores is very small, this…

Q: One sample has n = 8 and SS = 168. A second sample has n = 6 and SS = 126. What is the pooled…

A:

Q: A variable with a population average of 50 and a variance of 100 is likely to have an average…

A:

Q: Compaq Computer Corporation has an assembly plant in Houston, where the company’s Deskpro computer…

A: Given: The Engineers at an assembly plant in Houston are considering a new production facility. The…

Q: In order for a new drug to be sold on the market, the variance of the active ingredient in each dose…

A: Solution: State the hypotheses. Null hypothesis: That is, the variance of the drug in the tablets…

Q: 5. A bolt manufacturer makes a type of bolt to be used in airtight containers. The manufacturer…

A:

Q: If X is an unknown with the only possible values 11,12,13,14, or 15, and all are equally likely as…

A: Given that, X is an unknown  with all possible values 11, 12, 13, 14 or 15. These given values of X…

Q: when finding the test value for an F test, the larger of the two variances should at all times be…

A: F-distribution:The following conditions have to be satisfied to perform a F test.The populations of…

Q: For an analysis of variance comparing four treatment means with a separate sample of n = 8…

A:

Q: In a 25-Question multiple-choice, there are five possible answers of which one is correct. Let X:…

A: X=number of correct answers  n=number of trials=25 p=probability of success= 1/5 =0.2 [because each…

Q: If you obtained all possible random samples of size 6 as above and computed the mean from each…

A: From the above data  If you obtained all possible random samples of size 6 as above and computed the…

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

A:

Q: Assume the variance of IBM is .16 and the variance of Microsoft is .25. If the variance of an…

A:

Q: Consider a study in which the sum of squares based on an experimental group of 10 participants is…

A: Pooled variance:The pooled variance is given by,

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: It is investigated whether there is a difference between the statistics course final exam scores of…

A: The appropriate hypothesis to be tested is as follows here the square of S_1 and S_2 represent the…

Q: Group A is a sample of 15 people and has a Sum of Squares of 1200 Group B is a sample of 15 people…

A: From the provided information,

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: when comparing the means of samples from two normally distributed populations, if the samples are…

A: Conditions for using z-test is,The samples are randomly selected.The samples are independent.Sample…

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: If two samples are selected from the same population, under which circumstances will the two samples…

A: Given that, The two samples are selected from the same population.

Q: For a sample of n=36 that has a variance of 1296, what is the estimated standard error for the…

A: Given: Sample size (n)= 36 Variance = 1296

Q: Under what circumstances can a very small treatment effect be statistically significant? if the…

A: Sample size is n

Q: In analysis of variance problem if SST = 150 and SSTR = 100, then SSE is

A: It is known that, SSE = SST-SSTR.

Q: An analysis of variances produces dftotal = 29 and dfwithin = 27. For this analysis, how many…

A:

Q: - If the random variable X from a distribution with mean 70 and variance 9 find the mean and…

A: Given :-   EX = 70VarX = 9And ,   Y =-2X+5and , Z=X-703   we have to find EY , VarY and EZ , VarZ…

Q: One sample has SS = 60 and a second sample has %3D SS = 48. %3D a. If n = 7 for both samples, find…

A: SS for one sample =60 SS for second sample =48

Q: pooled variance of this study is

A: Given sum of square based on 1st experimental Group isS12=70n1=10SimilarlySum of square based on 2nd…

Q: b) The variance estimator from the two-stage cluster sampling will be always smaller than the…

A: Given problem Given that   The variance estimator from the two-stage cluster sampling will be…

Q: 6. One sample of fifteen observations has x₁ = 82 and s₁ = 5. A second sample of ten observations…

A:

Q: n analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE =…

A: Given data, Number of treatments t=3 Each treatment have 10 observations Total observations =10*3…

Q: You have an independent-measures study where your first sample has an S2=9 and your second sample…

A: (A). Compute the sample variances and pooled variance: Given that the sample sizes of two samples…

Q: Given two normally distributed populations with equal means, and population variance 1 of 240 and…

A: Given data: Given two normally distributed populations with equal means, and population variance 1…

Q: Group A is a sample of 25 people and has a Sum of Squares of 800 Group B is a sample of 20 people…

A: From the provided information,

Q: If it is certain that a random variable will equal a given number, then what is the variance of the…

A: If it is certain that a random variable will equal to a given number ,then the variance is equal to…

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: The population variance of the data set provided below is 19. Find k. 1.3k 1.6k 2.2k 2.9k 3.5k…

A: We know the formula to Variance is given by, Variance= E(X2) - (E(X))2 Where E(X2) = (summation…

Q: It is not essential to know the value of the population variances to test for the equality of two…

A: Solution To test the equality of means the F test is used .

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A: For critical value of chi square you can use the table or Excel function =CHISQ.INV.RT(0.05,29) =…

Q: sample of n = 10 score has ss= 108 what is the variance for this sample

A:

Q: An analysis of variances produces dftotal = 29 and dfwithin = 27. For this analysis, how many…

A: According to the given information, we have dftotal = 29 and dfwithin = 27

Q: In an analysis of variance problem if SST = 120 and SSTR = 90, then SSE is

A: It is given that SST =120 and SSTR = 90.

Q: Two samples each have n = 4 scores. If the first sample has a variance of 10 and the second sample…

A: Obtain the estimated standard error of the sample mean difference.   The estimated standard error of…

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A:

Q: In the experiment of A and B consumers, 12 sample points are set for A consumers, and the average…

A: The null and alternative hypotheses are stated as follows: The pooled variance is computed as…

Q: In a between-subjects design, individual differences between participants are a problem because they…

A: We have given the statement: In a between - subjects design, individual differences between…