researcher wants to test if the average performance of a new teaching method is different from the traditional teaching method in a sample of 25 students. The researcher used the Wilcoxon Signed-Ranks Test and obtained a T-value of 43. What can be concluded from the test result?

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A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

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A: Given that 30 participants  For liberal 1  For conservative 2  For not interested in poltics at all…

Q: Please make it so that I could copy and paste it! thank you Strack, Martin, and Stepper (1988)…

A: Given, sample size (n) = 25 SS = 150   standard deviation (Sd)  = √SS/n  = √150/25…

Q: Determine if this test is left-tailed, right-tailed, or two-tailed. Oleft-tailed Oright-tailed…

A: given data : 436,425,418,428,436,429,420,417,424,417,426,437,433,424,428,436,422,438,436,427

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Q: In Dr. Potter’s study of ‘Objective Increases in Fear Based on Type of Haunting’, he reported that…

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Q: If you are only comparing two groups of respondents, and the t-value is found to be 2.30, what will…

A: If you are only comparing two groups of respondents, and the t-value is found to be 2.30, what will…

Q: A researcher is interested in seeing if negative political ads against an opponent (group one) are…

A: Sample mean (x̅1) = 7.07Sample mean (x̅2) = 9.44Sample size (n1) = 20Sample size (n2) = 20Standard…

Q: Does training in stress reduction make a difference for student success?  15 students received…

A: Given Information: Sample 1: Sample size n1=15 Sample mean M1=88 Sum of squares SS1=400 Sample 2:…

Q: determine the number of hours stock brokers work each week. In particular, the trading magazine…

A: In this problem, a trading magazine wants to determine the number of hours stockbrokers work each…

Q: What is the margin of error for a 99% CI for a mean, when the sample size is 12, the sample average…

A: Given: Sample size, n = 12 Sample mean, x = 52 Sample standard deviation, s = 13 It follows a…

Q: Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had…

A: Sample size n = 237Sample mean x¯ = -3.5Sample standard deviation s = 7.8We have given the…

Q: that the mean score of these 53 students is 147.9. Is this significantly different from the national…

A: Given: Sample size, n = 53 Mean,  Population mean,  standard deviation,

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

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Q: An airline company is interested in improving customer satisfaction rate from the 78% currently…

A: Hi! Thanks for posting the question. Since there are more than one question we will answer first…

Q: The number of incidents in which police were needed for a sample of  10  schools in one county is:…

A: Given data is5,23,0,24,36,37,35,46,44,9arrange the data in ascending order0,5,9,23,24,35,36,37,33,46

Q: A researcher obtains M = 45 with SS = 250 for a sample of n = 10 women and M = 49 with SS = 270 for…

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Q: what is the answer to this question? Also for this case what would the p-value be

A: Step 1: Given informationMean for (difference)dˉ=4.9Standard deviation (difference) sd​=3.2 Sample…

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: D E AND F

A: Given : Two new drugs are being compared for effectiveness in lowering total cholesterol levels. On…

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A: Given that  A researcher surveyed 677 college men and 587 college women.  498 of the college men…

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A: given data sample size (n) = 8sample mean ( x¯ ) = 152sample standard deviation (s) =3095% ci for…

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A: Solution: Given information: n= 16 Sample size M= 24  Sample mean μ= 20  Population meanSS= 960 sum…

Q: A sample of n = 36 scores is obtained from a population with u = 100 and o = 24. If the sample mean…

A: GivenMean(μ)=100standard deviation(σ)=24sample size(n)=36sample mean(M)=104

Q: . Do the sample data support the conclusion that the Memory Booster has a significant "booster"…

A: Answer:-  Our hypothesis is, H0 : u=20   vs   H1 : u>20 Given that, n=16 xis 26 Variance=64…

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Q: Researchers conducted trials to investigate the effects of color on creativity. Subjects with a red…

A: Given n1=39, n2=40, sample mean x̄1=3.73, sample mean x̄2=3.14, s1=0.52, s2=0.85

Q: A random sample of 15 families representing three different Scandinavian countries has been observed…

A: Given:   Sweden Norway Denmark 10 11 7 9 10 5 4 5 2 2 2 0

Q: A survey by a magazine stated that 14% of men said they used exercise to reduce stress. A random…

A: Solution: Given information: n= 100 Sample size of men x= 10 men said they used exercise to relives…

Q: The result for a Pearson’s r between students’ test scores and their motivation was, r(24) = .32, p…

A: It is given that the correlation coefficient is 0.32 and the p-value is 0.07.

Q: Two separate samples, each with 16 individuals, receive two different treatments. After treatment,…

A: The pooled variance is, Thus, the pooled variance is 13.333.

Q: A sample of n=25 scores is obtained from a population with u=70 and o=25. If the sample mean is…

A: Z-score: The z-score value is a numerical measurement that describes a value of the relationship to…

Q: A special education teacher did research on whether or not there is a relationship between the…

A: The correlation coefficient and slope are –0.863 and –1.212294, respectively.

Q: Two sample T for Men vs Women SE Mean A physical therapist wanted to know whether the mean step…

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Q: A sample of 10 students took a class designed to improve their SAT math scores. Following are their…

A: The difference is, After Before Difference 482 447 35 479 440 39 451 439 12 431 435 -4…