Explore BrainMass

Explore BrainMass

    Hypothesis Testing

    BrainMass Solutions Available for Instant Download

    One Factor ANOVA Using Excel

    Based on the amount of time spent on Facebook, students are classified into 3 groups and their grade point averages are recorded. The following data show the typical pattern of results. FACEBOOK USE WHILE STUDYING NON-USER RARELY U

    ANOVA (Tukey HSD)

    Please help me with this question if possible. Thank you! The following is hypothetical data similar to the actual research results about birds. The numbers represent relative brain size for the individual birds in each sample. NON-MIGRATING SHORT DISTANCE MIGRANTS LONG DISTANCE MIGRANTS

    Step-by-Step One Way Analysis of Variance (ANOVA)

    I have been working on this, Can anyone help me with this? In easy to understand terms? ANOVA (One-Way Analysis of Variance) 1. A psychologist would like to investigate the relative effectiveness of three therapeutic techniques for treating mild phobias. A sample of 15 individuals who demonstrate a moderate fear of spider

    Repeated Measure Study

    For which of the following situations would a repeated measures research design be appropriate? * comparing verbal solving skills for science majors vs art measures * comparing math skills for girls vs boys at age 10 * comparing pain tolerance with and without acupuncture needles ( i chose this one) * comparing self esteem f

    T Test on Mean Difference and Computing R Squared

    Masculine themed words are frequently used in job recruitment materials, especially for job advertisements in male-dominated areas. the same study found that these words also make the jobs less appealing to women. in a similar study, female participants were asked to read a series of job advertisements and then rate how interest

    Sample Size, Sample Error, and Sum of Squares

    On average, what value is expected for the t statistic when the null hypothesis is true? *1 *1.96 *0 (?) *t>1.96 What is the sample variance and the estimated standard error for a sample of n=9 scores with SS= 72? *s2=3 and sM=3 *s2 and sM= 1 *s2=9 and sM=3 (?) *s2=3 and sM=1 Which set of characteristics will produ

    T-test for a Sample Height

    From literature research, a physiologist learns that the national average height for male college students is 70 inches. Twenty randomly-chosen male students at AWC had the following heights: 68, 71, 73, 66, 65, 68, 58, 63, 77, 57, 69, 63, 64, 59, 74, 72, 70, 64, 56, 72 At α = 0.05, do male college students at AWC

    Independent Sample Testing of Hypothesis

    please help me solve this in simple steps. thank you. A researcher conducts an independent-measures study comparing two treatments and reports the t statistics as t(25)= 2.071. How many individuals participated in the entire study? use a two tailed test with o=.05 and the distributions tool below to determine if there is s

    Computing Pooled Variance and Standard Error for 2 Sample Means

    Two separate samples, each with n=15 individuals, receive different treatments. After treatment, the first sample has SS=1740 and the second has SS=1620. The pooled variances for the two samples is _________. Compute the estimated standard error for the sample mean difference. Estimated s(M1-M2)=________ If the sample mean

    Computing Standard Error and Explaining T and Z Distribution

    Can you please help me with these questions? Some I have attempted to answer. Please let me know if they are right or wrong. Find the estimated standard error for the sample mean for each of the following samples. (Use one decimal place) n=4 with SS = 48 _______ n=6 with SS= 270 _________ n= 12 with SS= 132 _____

    Explaining the difference between standard deviation and standard error

    Under what circumstance is a t statistic used instead of a z-score for hypothesis test? - when o is known - when o is unknown (this is the one i had chosen) - when o is small - when o is large A sample of n=25 scores has a mean of M= 83 and a standard deviation of s=15. Explain what is measured by the sample standard devi

    Six basic statistics questions regrading hypothesis testing

    A two tailed hypothesis test is being uses to evaluate a treatment effect with o= .05. if the sample data produce a z- score of z= -2.24 what is the correct decision? * reject the null hypothesis and conclude that the treatment has an effect * fail to reject the null hypothesis and conclude that the treatment has no effect

    Type I and II error

    Can you please let me know if I answered these word questions correctly. My book isn't exactly to the point. i understand if you can't. Thank you You complete a hypothesis test using o=.05 and based on the evidence from the sample, your decision is to reject the null hypothesis. which of the following is true? * you have m

    Explaining 6 Basic Statistics Questions on Hypothesis Testing

    I am just wanting someone to see if answered these word questions correctly. My book isn't exactly to the direct point. I understand if your unable to. Which of the following accurately describes the critical region? * outcomes with a high probability if the null hypothesis is true * outcomes with very low probability if t

    Hypothesis Test with Cohen's d

    In a study examining the effects of alcohol on reaction time it was found that even moderate alcohol consumption significantly slowed the response time to an emergency situation in a driving simulation. In a similar study researchers measured reaction times 30 minutes after each participant consumed 6 ounces of wine. Again they

    Hypothesis Testing Method

    1. Let take for example that research in your area was providing behavior therapy with people who have neurological problems: Imagine that you are in charge of a research Assignment, and can choose to do research on anything. a). What research question would you create? b). Write out your research question and explain an

    Run a two-way ANOVA in SPSS

    I need help with someone who can run a Two-Way ANOVA using SPSS software and include appropriate results only based on the information provided in the attachments. Please explain and evaluate the SPSS results. Please see attachments I up loaded all the data needed to perform an SPSS two-way ANOVA. Research Question for

    Statistics project based on hypothesis testing

    Your Project should be complete and contain sections entitled: Hypotheses: this section should contain the hypothesis or hypotheses that you tested.This section should be 1 to 2 pages in length. Research Design: this section should clearly define the independent variable(s), the levels of such, and the dependent variable(

    SPSS: One way and Two way ANOVA

    Please see attachments for full problem description 1. Compare the different Ethnicities of students in the Stat_Grades.sav class to determine if there is a statistically significant difference in the average Final Examination points between the different ethnicities. Be sure to state the hypothesis, state Ho and Ha, includ

    One-Way & Factorial ANOVA using SPSS

    Whenever there are two independent variables and each independent variable has multiple groups, the most appropriate statistical test to use to compare these means and interactions is the two-way (factorial) ANOVA. Please see attachments:

    Choosing value of alpha levels

    Researchers routinely choose an alpha level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower alpha level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?

    Null and alternative hypothesis for testing means of three groups

    For the use of a one-way ANOVA there must be more than two means that are being compared. As a result, the following research question is proposed: Does a six week or 12 week self-monitoring program provided to teens between the ages of 13 and 15 diagnosed with ADHD reduce anxiety levels when compared with no intervention? In

    One ANOVA Testing

    Hi Chris, The beginning question is asking "In your area of psychology." My area of psychology is Applied Behavioral Analyst or Behavioral Therapist or Clinical Psychology. This exercise trying to get one ready for research area involving psychological questions that may arise in one career into one the areas involving psycholo

    How do you perform a t-test?

    How is hypothesis testing performed using t-tests? How do you write out Ho and Ha? What are the options for determining whether a hypothesis test result is significant? What are critical regions? How do you determine which t-test is most appropriate to use?

    Statistical Analysis of Population and C02 per Capita Emission

    Using the attached dataset and hypothesis below, kindly assist with the following: 1. Run descriptive statistics and a t test on the emissions dataset attached. 2. Include an SPSS output file of the descriptive statistics analysis in a Word document, along with each of the following elements: a. The SPSS output, includin

    Explanations of SPSS, T-tests, Hypothesis Tests and Statistical Power

    How is hypothesis testing performed using t-tests? What are the options for determining whether a hypothesis test result is significant? What are critical regions for t-tests? How is SPSS used to perform an independent samples t-test? How are SPSS t-test results evaluated? How do you find the p-value in SPSS, and

    Inferential Research Question: Home Price

    Considerable focus will be directed toward hypothesis testing methods, analysis, interpretation, and related SPSS application. In hypothesis testing is to create a testable research hypothesis. This hypothesis will be formalized and written as a null hypothesis (Ho) and an alternative or research hypothesis (Ha). Please see atta

    Hypothesis Testing - 3 hypothesis

    I am having trouble defining the 3 hypothesis' which is the very first step of this case. I realize that I would be using t-distribution for the first hypothesis, but I'm not sure where to go and I believe it is because I don't follow the way the assignment is worded.

    Two way Analysis of variance

    I want to see two methods are the significantly same or not. Each methods has 5 variables are inside. so I would like to see each 5 variables from methods A and B are significantly the same and overall the two methods are significantly same or not. Could you set up the statistically methods(experimental design) (Null hypothesis