a study of the effects of color on easing anxiety cpmpared anxiety test scores of prticipants who completed the test printed on either soft yellow paper or on harsh green paper.the scores for the five participants who cpmpleted the test on the green paper were 20, 26, 28, 21, and 18. the scores for four particiopants who completed the test on green paper were 20, 26, 17, and 24. using the .05 level, one-tailed (predicting lower anxiety scores for the yellow paper), what should the researcher colclude?  a. use the steps of hypothesis testing

Q: For each of the following research scenarios, indicate which type of t-test: one-sample,…

A: Introduction: A one-sample t-test is suitable to test whether the mean of a population of interest…

Q: Morgan City Fire Chief Sidney Pyro is concerned about the low efficiency scores that his…

A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we…

Q: Recent research indicates that the effectiveness of anti-depressant medication is directly related…

A: The one way ANOVA is used to determine the whether there is any significance difference between the…

Q: Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose…

A:

Q: A marketing research company tests the effectiveness of three new flavorings for a new sauce using a…

A: Null Hypothesis: H0: The means of the  three factor groups are same. Alternative Hypothesis: H1: At…

Q: Recall the study, reported in Exercise 7.8.1, in which Dora et al. (A-37), investigated spinal canal…

A:

Q: A study of the effects of color on reducing anxiety compared anxiety test scores of participants who…

A: According to the provided information, two individuals groups took the same test on different colors…

Q: A mail-order catalog firm would like to test the effect of the size of a magazine advertisement and…

A: Note that I used R software for my calculations.

Q: In the journal Mental Retardation, an article reported the results of a peer tutoring program to…

A: a) The level of significance is 0.01.

Q: In clinical trials of a medication, 2055 subjects were divided into two groups. The 1536 subjects in…

A: Two sample proportion test: Two sample proportion test is used to test the significance difference…

Q: ction is independent of having Cancer giver between the variables Asbestos, Smoking,

A: Bayesian Network Asbestos used in construction causes lot of health issues One among them is cancer…

Q: Stephens, atkins, and Kingston, 2009 conducted an experiment in which participants were able to…

A: Independent variables- Independent variable is the variable the experimenter changes or controls to…

Q: In an experiment to study the dependence of hypertension on smoking habits, the following data were…

A:

Q: A Canadian study measuring depression level in teens (as reported in the Journal of Adolescence,…

A: Given information μ1 =mean depression score for male teen μ2 =mean depression score for female teen…

Q: For each of the following scenarios, what are two names for the ANOVA that would be conducted to…

A: Introduction: It is required to identify the type of ANOVA suitable for each scenario.

Q: A study reported in the Journal of the American Medical Association investigated the cardiac demands…

A: The data represent the heart rates in beats per minute for each of the 10 subjects. State the…

Q: A study of all students at Lanier High School that own pets. You collect data for a study about the…

A: A)Census Reason: As we are studying the whole population.   B) Experiment Study Reason: As we…

Q: In the journal Mental Retardation, an article reported the results of a peer tutoring program to…

A: (a) Here, the level of significance is 0.01.

Q: Morgan City Fire Chief Sidney Pyro is concerned about the low efficiency scores that his…

A: A two-sample independent t-test is performed to test if there is a statistically significant…

Q: Here is data for a 2-group study looking at levels of openness between successful and unsuccessful…

A: Given information: The data represents the values of sample size, mean and standard deviation of two…

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

A:

Q: A study assessed the lung destructive index among smokers and non-smokers provided the following…

A: Given , x¯1 = 14.5 , x¯2 =12.5 n1 = 10, n2 = 8 Pooled standard deviation = sp = 1.50 Claim : 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: You are assigned to run a study comparing a new medication (X̅=17.47,n=19), an existing medication…

A: Given: SSB = 210.10, SSW = 133.90, new medication (X̅=17.47,n=19), existing medication (X̅ = 17.94,…

Q: for an experiment involving 3 levels of factor A and 3 levels of factor B with a sample of n=8 in…

A: The degrees of freedom values for the F-factor for A*B interaction is (4, 63) and it is obtained…

Q: In a study to determine if the nitrogen content of the soil in Wyoming is less than the nitrogen…

A:

Q: Prior to assessment of the outcome, the researchers did a manipulation check. Members of Groups 1…

A: It is given that the F-test statistic value is 184.29.

Q: In the journal Mental Retardation, an article reported the results of a peer tutoring program to…

A: The test statistic can be calculated as:

Q: To combat antibiatic resistance, the Quality Consortium recommends a throat swab to confirm strep…

A: From the provided information, Population proportion (p) = 0.40 The hypotheses can be constructed…

Q: The owner of a hair salon is curious about the relationship between the amount of hair cut and the…

A: Let ρ denotes the population correlation between the amount of hair cut and the amount of money…

Q: In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the…

A: It is given that the sample mean is 8.01 and the sample standard deviation is 0.8.The population…

Q: Three samples of each of three types of PVC pipe of equal wall thickness are tested to failure under…

A: Since, you have posted a question with multiple sub-parts, we will solve only the first 3 sub-parts…

Q: Light Heavy     Nonbrowser Browser Browser     10 9 7     11 10 9     12 9 7     9 8 9     9 11 6…

A: To test the difference between the comfort scores of the three types of browsers, B1, B2, B3 (say).…

Q: An independent-measures study comparing two treatment conditions produces a t statistic with df -18.…

A: DF = n1+n2-2 =18 Here n1=n2 = n

Q: The following data were obtained from a two-factor independent-measures experiment with n = 5…

A: Given information: The data corresponding to the two-factor independent-measures experiment with n =…

Q: To combat antibiatic resistance, the Quality Consortium recommends a throat swab to confirm strep…

A:

Q: An engineer tests air conditioner compressors made with a new design to see if fewer have…

A: Given : Z =-1.82 Using Z score value we find how much time standard deviation away from mean.

Q: In which of these research designs would you have complete control of the environment?     Cohort…

A: Solution :  In experimental design the researcher set up the environment and carefully controls the…

Q: Which of the independent variables retains the strongest association with the number of children a…

A: Given information: SPSS regression output is given.

Q: Is sunscreen with an SPF 30 rating more effective at preventing sunburn than sunscreen with an SPF…

A: Denote p15, p30 as the true population proportions of sunburn people who wear SPF 15 and 30…

Q: A random sample of nine cities gave the following figures for annual per capita of cigarette…

A: Given information: Cigarette consumption(x) Death Rate per million 470 180 510 140 400 160…

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

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: In the journal Mental Retardation, an article reported the results of a peer tutoring program to…

A: Given information- We have given two groups- For experimental group- Sample size, n1 = 30 Sample…

Q: For a study using a t test for independent means, the approximate number of participants needed for…

A: Given : 50% power of an estimated medium effect size

Q: A study reported in the Journal of the American Medical Association investigated the cardiac demands…

A: In the given situation, the suitable technique is 'One way ANOVA'.   Excel Procedure: Enter the data…

Q: What is the difference between a between-subjects design and a within-subject design? Which t-test…

A: In between-subjects or between-groups study design, different people test each condition, so that…

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

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

Q: Prior to assessment of the outcome, the researchers did a manipulation check. Members of Groups 1…

A: Q1)The calculate F-statistic = 184.29Critical f-value at df(1,108) = 3.929Excel formula used:…