A repeated measures study comparing two treatments with a sample of n=4 participants produces Md=4 and a S2=36. What is the T value for the repeated measures t statistic for these data?

Q: If I have a sample of 25 people what is my T-threshold for a two-tail test and an alpha of 0.05…

A: Given: Sample size (n)=25 Level of significance α=0.05%

Q: A researcher conducts an independent-measures study comparing two treatments and reports the t…

A: Given :  A researcher conducts an independent-measures study comparing two treatments and reports…

Q: In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that…

A: The null and alternative hypotheses are; H0: µ = 400. That is, the sample mean is not sufficient to…

Q: The mean cost of the ingredients of a chicken parmesan meal bought at the grocery store is $15.…

A: Solution:

Q: study comparing two treatments with n = 4 participants produces MD = 2 and SS = 75 for the…

A: Given: n = 4 MD = 2   SS = 75

Q: To combat antibiotic resistance, the Quality Improvement Consortium recommends a throat swab to…

A: Here, the test is left tailed.

Q: A competitive sports league expects athletes to practice 1000 hours a year, but they predict that…

A:

Q: If you are making 4 comparisons between means, then based on the Bonferroni correction, you should…

A: Introduction: While performing an analysis, a researcher may often need to make multiple comparisons…

Q: Random samples of size 150 are collected from each of two populations to test the hypotheses  The…

A: The p-value can be calculated as: P-value =2*P[Z>2.23]

Q: A survey of 28 employed workers found that the correlation coefficient between the number of years…

A: Solution: a. State the hypotheses. Null hypothesis: That is, there is no relationship between…

Q: A repeated-measures, a matched-subjects, and an independent-measures study all produce a t statistic…

A: From the provided information, A repeated-measures, a matched-subjects, and an independent-measures…

Q: What is the kurtosis for a distribution with a mean of 12.00 and a mode of 12.00?

A: The shape of a distribution is determined by 2 measures, skewness and kurtosis. Skewness for non…

Q: Imagine that your null hypothesis is μ = 16 and your alternative hypothesis is μ ≠ 16 for a…

A: It is given that the test is two-tailed. Level of significance is 0.05 Degrees of freedom is 19–1…

Q: A sample of 12 scores has a variance of s2 = 48. What is the estimated standard error for the sample…

A:

Q: A clinical psychologist is interested in testing whether serial killers are more introverted than…

A: 1 State the hypotheses. That is, there is no evidence that to conclude that the serial killers are…

Q: A repeated-measures, a matched-subjects, and an independent-measures study all produce a t statistic…

A: Given study produces a t statistic with df=16.

Q: A sample of n = 4 scores has a variance of s2 = 64. What is the estimated standard error for the…

A: Sample size, n = 4 Variance = 64

Q: A researcher uses a repeated-measures study to compare two treatment conditions with a set of 20…

A:

Q: A repeated-measures study comparing two treatments with n = 4 participants produces a treatment mean…

A:

Q: A researcher conducts an independent-measures study comparing two treatments and reports the t…

A:

Q: The t-statistic is computed as follows:   The p-value for t = 2.062 and 16 df is 0.0279 (from the…

A: Given information- Value of t-statistics = 2.062 Degree of freedom, df = 16 We have to find the…

Q: To illustrate the effects of driving under the influence of alcohol, a police officer brought a DUI…

A: It is given that the reaction times in an emergency was measured with unimpaired vision and also…

Q: A sample of difference scores from a repeated-measures experiment has a mean of MD = 5 with a…

A: Solution-: Given: MD=5,s2=64,n=4,α=0.05 We want to find  the critical t-value if it is a two-tailed…

Q: In a group of 55 examinees taking the 50-item test, Rachel obtained a score of 38. This implies that…

A:

Q: If I have a sample of 20 people what is my T-threshold for a two-tail test and an alpha of 0.1…

A: Given: Sample size (n)=20 Level of significance α=0.1%=0.001 Test is two tailed.

Q: A normal population has a mean of μ = 25 on a communication effectiveness scale. After receiving a…

A: From the provided information, Sample size (n) = 4 Level of significance (α) = 0.05

Q: "With alpha equal to .05, a two-tailed independent-samples t test showed similar number of days to…

A: It is given that the value of p is 0.63 and the level of significance is 0.05.

Q: A random sample of 54 students from Cabrillo College are selected from a normal population with mu…

A: We have  to find Given the test statistics .

Q: What is the critical t score if you are testing a two-tailed hypothesis with df = 44? (α level of…

A: Obtain the critical value at the 0.05 significance level. The critical value is obtained below as…

Q: A dlinical trial is conducted comparing a new pair reliever for arthritis to a placebo. Participants…

A:

Q: A random sample of residents from various income brackets were asked their opinion on tax reforn for…

A: b.   *:   Total for Low:   *=26+60+34=120   **:   Expected frequency of Against and High:…

Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: c.   Denote p1, p2 as the true population proportions of wildfires caused by human in south and…

Q: A researcher conducted a t-test for independent samples to evaluate the mean difference between two…

A:

Q: 4. A. What is the critical t-score for a two-tailed test with a a = 0.05? tcrit B. Is this…

A: Correlation coefficient r = 0.3931   The test statistic is given by

Q: By selecting a larger alpha level, a researcher is ______. a. attempting to make it easier to…

A: We have to find the correct answer for....... By selecting a larger alpha level, a researcher is…

Q: A sample of n = 9 scores has a variance of s2 = 36. What is the estimated standard error for the…

A: Estimated standard Error of Mean =    Given, n=9 S2=36 Therefore substitute n,S2   in above…

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A:

Q: A researcher used a sample of n =16 adults between the ages of 40 and 45. For each person, the…

A:

Q: With α = .05, what is the critical t value for a one-tailed test with n = 15?​

A: Given level of significance = 0.05 and one tail test.we need critical value for t distribution with…

Q: You obtain a t comp of .975 in a two sample independent t test with alpha at .05. Is it…

A: Two sample t test is used to test the significance difference between two group mean.  P value : The…

Q: The director of student services at Oxnard College is interested in whether women are just as likely…

A: (a)

Q: their improvement scores on a diagnostic test are compared to a control sample of 13 patients who…

A: Given Data : For Sample 1 x̄1 = 50.9 s1 = 12.0 n1 = 16 For Sample 2…

Q: A repeated-measures ANOVA with n = 59 subjects has df within = 14. What is the value for df error…

A: Given information N = 59 subjects

Q: A sample of n = 25 scores has a mean of x̅ = 65 and an estimated standard error of sM = 2 points.…

A: Given that, x̅ = 65sM = 2 n=25 The formula of sample variance is, Using the standard error of…

Q: An independent-measures study uses n = 15 participants in each group to compare two treatment…

A: An independent-measures study uses n = 15 participants in each group to compare two treatment…

Q: A repeated-measures analysis of variance for a study comparing three treatment conditions with a…

A: Given information 3 treatments n = 20 participants F-ratio = 6.40 P-value = 0.0075(Using Excel = F.…

Q: In a study examining the effect of alcohol on reaction time, Liguori and Robinson (2001) found that…

A: a) The null and alternative hypotheses are; H0: µ = 400. That is, the sample mean is not sufficient…

Q: A repeated-measures ANOVA was calculated with df = 1, 14. If the same data were analyzed with a…

A: here degree of freedom = n-2 = 14

Q: A researcher would like to determine if relaxation training will affect the number of headaches for…

A: Let μ1 denotes the average number of headaches suffered before training and μ2 denotes the average…

Q: A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo. Participants…

A: