In a study reported in the American Journal of Clinical Nutrition, young men who drank fat-free milk after exercising gained 40% more muscle mass than those who drank a soy beverage after exercising.  Fat-free milk drinkers gained 60% more muscle mass than those who consumed a sweetened sports drink.    What is the response variable in this study? What is the explanatory variable in this study? What is the role – type classification of the variables in this study?

Q: Researchers have sought to examine the effect of various types of music on agitation levels in…

A: Here are the steps to perform two-factor ANOVA with replication (we will perform ANOVA since were…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: (a) Determine the level of significance. Correct option: Option 4

Q: What are the three different measures of central tendency?

A: The three measures of central tendency are: 1.Arithmetic Mean:The arithmetic mean of a variable is…

Q: only HANDWRITTEN answer needed ( NOT TYPED)

A: The standard error explains how much the sample represents the population. It is more then it shows…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: Given: n1=34 , n2=33, x1=15.2, x2=19.5, σ1=7.6, σ2=4.8 The hypothesis that can be derived is: H0:…

Q: In a study recently published in a health journal, it was suggested that lack of exercise…

A: In this case, the study indicates whether the lack of exercise contributed more to weight gain that…

Q: Does more education lower a person’s level of prejudice? The number of years of education and the…

A: From the provided information, Sample size (n) = 10 Years of Education 12 15 14 13 18…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: From the provided information,

Q: Does quality of communication improve after people are married? Let’s consider a study by Olthoff…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Studies have suggested that alcohol abuse and disorders are found to be more prevalent during early…

A: a)   Denote p1, p2 as the true population proportions of young adults who have consumed alcohol and…

Q: The head of the quality control department at a printing company would like to carry out an…

A: The head of the quality control department at a printing company would like to carry out an…

Q: Researchers interested in determining if there is a relationship between death anxiety and…

A: There are two variables which are death anxiety and religiosity. We have to test whether there is a…

Q: In a study published in Preventive Medicine (1991), researchers observed that women who underwent…

A: Given study: Researchers observed that women who underwent hormone replacement therapy (HRT) showed…

Q: Heavy Alcohol Consumption Cases Controls Yes 50 50 No 75 150   Based on the brief…

A:

Q: I need help with finding the P-value

A: The test statistic is, z=x¯1-x¯2σ12n1+σ22n2=15.2-19.76.8230+4.8234=-4.51.48962424529=-3.0209≈-3.02…

Q: For the purposes of this study, which variable(s) are explanatory and which variable(s) are response…

A: Explanatory variable:It is also known as the independent or predictor variable, it is used to…

Q: McAllister et al. (2012) compared varsity football and hockey players with varsity athletes from…

A: a) Let 'X1' be the random variable represents the test score for 'contact sport athletes' Let 'X2'…

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: a) The level of significance is 0.05.

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: The distribution is normally distributed. There are two independent samples which are older adults…

Q: A researcher conducts an independent-measures study examining how the brain chemical serotonin is…

A: A. Null and alternate hypotheses: The investigator is specifically interested to test whether the…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: The provided sample means are shown below: Xˉ1=15.2\bar X_1 = 15.2 (For older people) Xˉ2=19.5\bar…

Q: Find the standard error for comparing the means.  Construct a 95% confidence interval for the…

A: The sample mean of the body dissatisfaction assessment score was 13.4 (s=7.9) for 15 lean sports…

Q: You are conducting a study to analyze gender differences in neurocognitive impairment (NCI) within a…

A: We are conducting a study to analyze gender differences in neurocognitive impairment (NCI) within a…

Q: A research study was conducted about gender differences in "sexting." The researcher believed that…

A: Solution:- from given information claim: The proportion of girls sending sexts is less than the…

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: For age 65 and older : Sample Mean 1 (Xˉ1)(\bar X_1) = 15.215.2 Population Standard Deviation…

Q: Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a…

A: Let x1: Number of mothers with autism taking prenatal vitaminsx2: Number of mothers with autism…

Q: Whirling disease is a deadly disease that affects trout in Montana riversIn a follow-up to a 2006…

A: The relative risk of whirling disease for rainbow trout compared to brown trout can be calculated as…

Q: As men age, their testosterone levels gradually decrease. This may cause a reduction in energy, an…

A: Here, we are given a study of 237 men aged 60 to 80 years with low or low normal levels of…

Q: A research team is interested in the effect of Parent-Child Interaction Therapy (PCIT) in reducing…

A: question for research is Parent-Child Interaction Therapy (PCIT) is reducing children’s disruptive…

Q: Indicate explanatory and response variables. Response variable. Explanatory variable. Measure of…

A: The objective is to identify whether the given variable is explanatory or response variable.

Q: A sports psychologist studied the effect of a motivational program on number of injuries in one year…

A: Given that: P-value for main effect of sports =0.024

Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…

A: We have given that  Sample size n1= 38 , n2= 37 Sample mean x1 = 15.2%=0.152 x2= 18.1%=0.181 Known…

Q: Attractiveness of body types has been a large discussion relating to effects on youth and culture.…

A: BMI designed by men n=35x¯=18.85s=1.75S.E Mean=0.277 BMI designed by women n=48x¯=25.860s=4.215S.E…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.