A study investigated the therapeutic effectiveness of mindfulness versus traditional cognitive behavioural therapy for people with anxiety. Twenty-four clients with diagnosed anxiety were randomly assigned to one of the two therapy types, where there were 12 in each group. After six sessions their anxiety levels were measured, where lower scores indicated lower levels of anxiety (mindfulness mean = 35; cognitive behavioural therapy mean = 42). The pooled variance is 16.636 What is the approximate value of the standard error of the difference? 1.67 1.59 2.54 2.78

Q: 28 and 84 days after birth. 12 were fed on a high protein diet and 7 on a low protein diet, and the…

A: Claim: A high protein diet would cause more weight gain, on average

Q: An experiment to explore the pain threshold to electrical shocks for males and females resulted in…

A: From the given information, MalesFemalesSample Size1410Mean16.214.9variance12.726.4

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: A) The hypothesized mean is 8.16.

Q: On the basis of data provided by a salary survey, the variance in annual salaries for seniors in…

A: Solution: Given information: n1=25 Sample size of seniors n2=26 Sample size of managerss21=2.1…

Q: The time married men with children spend on child care averages 6.1 hours per week (Time, March 12,…

A: The hypotheses can be constructed as: H0: µ = 6.1 H1: µ ≠ 6.1 Sample size (n) = 40 Assume level of…

Q: The data from an independent-measures research study produce a sample mean difference of 4 points…

A:

Q: A data set from a study that examined the effect of a specific diet on blood pressure is below.…

A: Given Information : A data set from a study that examined the effect of a specific diet on blood…

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

A:

Q: A researcher believes that the mean earnings of top-paid actors, athletes and musicians are the…

A: Denote μ1, μ2, and μ3 as the true mean earnings of to-paid actors, athletes, and musicians,…

Q: When comparing more than two treatment means, should you use an analysis of variance rather than…

A:

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: Given that: Population mean, μ=8.14 Mean and standard deviation of the sample are: x¯=7.87s=1.25

Q: To determine the effects, researchers measured the LDL levels of 36 randomly selected men and 41…

A: Solution-: Given:               For women:n1=41,x1¯=15.4,σ1=1.9  and  For men: n2=36,x2¯=13.3,σ2=1.3…

Q: Step 5 of 5: What is the conclusion?

A: Let be the population variance.Given that,Pop. mean Pop. variance Sample size Sample mean Sample…

Q: archer wanted to examine the effect of a new math study skills program on se y-five students took…

A: Given that  Sample size n =25 Sample mean=85 Sample variance s2 =100 Sample standard deviation s=10…

Q: What is the difference between the significance level of comparison and the alpha?

A: What is the difference between the significance level of comparison and the alpha ? For a…

Q: A Union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: Given: Population mean μ = 8.25 Sample mean X = 7.88 Sample standard deviation S = 1.25

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, µ, of…

A: Solution

Q: What is the expression for PROPORTION OF EXPLAINED VARIANCE, η2 (ONE-FACTOR ANOVA)?

A: The proportion of explained variance is known as the coefficient of determination. It is the ratio…

Q: Data is collected to compare two different types of batteries. We measure the time to failure of 10…

A: Given that, Mean1, X1 bar= 8.65 Mean2, X2bar=11.23 Variances are equal so standard deviations will…

Q: A researcher believes that the mean earnings of top-paid actors, athletes and musicians are the…

A: For actor (x1): sample size (n1) = 14 sample mean (x̄1) = Σx1 /n1 = 428/14=30.57 sample…

Q: A manufacturer of chocolate chips would like to know whether its bag filling machine work correctly…

A: Solution-: Given:  We find, (a) Hypothesis  (type of test) (b) Test statistic (c) Critical value (d)…

Q: ds the data for the Analysis of Variance (ANOVA). If she reported the test statisti .1 "hat is the…

A: Given For the given scenario of ANOVA We have Number of groups=k=5

Q: order to ensure that there is not a large disparity in the quality of education at various schools…

A: Given Alpha=0.05 n=27 Mean=189.720 Standard deviation=2.230

Q: The Tennessee Health Department is concerned about average baby length. We know that the national…

A: We have given that n=613836

Q: To investigate the impact of texting while driving on road traffic accidents (RTA), two groups of…

A: Solution. Given to  investigate the impact of texting while driving on road traffic accidents (RTA),…

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: Solution Given That, A union of restaurant and foodservice workers would like to estimate the mean…

Q: Fifty boys and Fifty girls face off in a game of darts.  The dependent variable is the number of…

A: We want to find the test statistic and p value

Q: An independent-measures study produced sample mean of M1 = 20 and M2 = 17.  If both samples have n=…

A: Given M1=20, M2=17 and Cohen's d=50.   It is known that      where  sp2 is the pooled variance.

Q: A therapist would like to evaluate an intervention for treating depression.  A sample of n = 20…

A: From the provided information, Sample size (n) = 20 Level of significance (α) = 0.05 Mean difference…

Q: The accompanying table lists distances (mm) between pupils of randomly selected U.S. Army personnel…

A: The results of two-way analysis of variance is given.

Q: if a researcher undertook an experiment to evaluate the efficacy of a memory enhancement technique…

A: The objective of this question is to determine whether there is a statistically significant increase…