A social worker wants to know if there is a relationship between the number of foster children living with a family and a child’s academic success in elementary school.  The school GPA and number of children living in the household was recorded for 50 foster children.  Which statistical test would be best to determine if there is a significant relationship between variables?           dependent samples t-test     independent samples t-test     Pearson's r

Q: Extroverted Introverted Clergy 62 45 M.D. 68 95 Lawyer 56 81

A:

Q: 2. Researchers interested in determining if there is a relationship between death anxiety and…

A: A correlation coefficient represents strength and direction of relationship between the variables.…

Q: A researcher conducted a test where she wanted to determine if there was a relationship between…

A: It is given that the researcher wants to check if there is a relationship between gender and movie…

Q: The Mathematical Anxiety Rating Scale (MARS) measures an  individuals level of mathematical anxiety…

A: The two sample t test for independent sample is a type of parametric test. It is used to estimate…

Q: A school district wanted to compare ACT scores between two of its schools (school A and school B).…

A: Symmetric distribution: In symmetric distribution, mean, median, and mode are same. Skewness: For…

Q: Use the table of critical values of the Pearson correlation coefficient to determine whether the…

A: Degrees of freedom: The formula for degrees of freedom is as follows: Df = n – 2. The number of data…

Q: Which of the following problems in which the appropriate test to use is independent sample t-test?…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A public health researcher wants to know if there is a relationship between a persons age and the…

A:

Q: A social worker surveys a group of 100 high school students and asked them to indicate how many days…

A: Since we have two categories male and female. So, chi-square statistics should be used. Because…

Q: A researcher wants to examine the accuracy of people’s judgment of time.  Individuals were placed in…

A: Slwe have to find test used.

Q: A random sample of 120 married or de facto couples in the Sydney region has been selected to study…

A: Given Information: Test run:=Chi-squared goodness of fit testχ2=73.544df=3p-value=7.431e-16

Q: For the data presented below, use SPSS to conduct a Pearson r test to determine if a significant…

A: Introduction:Assume that the data are at least approximately normal.The null and alternate…

Q: Find the p-value    p-value =    The p-value is Greater than αα Less than (or equal to) αα   The…

A: Ticket Price (X) Attendence (Y) (x-xbar) (x-xbar)^2 (y-ybar) (y-ybar)^2 (x-xbar)*(y-ybar) 6 153…

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: It is well known that similarity in attitudes, beliefs, and interests plays an important role in…

A: Given Information: Couple Wife Husband A 2 8 B 5 4 C 2 3 D 1 6 E 4 3 F 3 5 G 5 4…

Q: Determine what the key terms refer to in the following study. A cardiologist is interested in the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A population has mean 18 and SD 6. What percent of samples of size 16 have a mean of 20 or more?…

A: Given,μ=18σ=6n=16P(X>20)=?

Q: An obstetrician knew that there were more births during the week than on weekends. She wanted to…

A: a) Response variable: Here, the response variable is number of births. This variable can be…

Q: ou are a trainer working for a company that has developed a new customer service training program…

A: You are a trainer working for a company that has developed a new customer service training program…

Q: Flying Home for the Holidays Does the airline you choose affect when you'll arrive at your…

A: Part a)  The null and alternative hypotheses for this test are given as below: H0: µ1 = µ2 vs. Ha:…

Q: Empathy among police officers influences how they interact with citizens and the likelihood that…

A: Hypotheses: Null hypothesis: H0: μ1=μ2 There is no difference between the attitudes for males and…

Q: The result for a Pearson’s r for online, university students’ perceived learning and their sense of…

A:

Q: Using the data below and a 0.05 significance level, suppose you want to test the claim that the…

A: Given information Level of significance α = 0.05 Null and alternative Hypothesis H0:- The…

Q: A social psychologist wants to know if people are more or less likely to help a person that appears…

A: A hypothesis test is carried out to test if there is sufficient evidence provided by the obtained…

Q: Which of the following is a true statement regarding the information shown in the histogram? The…

A: Categorical variable: It is called quantitative variable. It does not include numeric values.…

Q: A researcher is interested if the tipping behavior of customers differs depending on the weather.…

A: D .  ANOVA

Q: The data shown below consists of the price (in dollars) of 7 events at a local venue and the number…

A: Given: The data set is as follows x y 6 193 10 143 14 156 18 192 22 107 26 113 30…

Q: A new restaurant in a local mall wished to learn more about its potential customers. It surveyed 200…

A: The hypotheses test will contain two hypotheses: null hypothesis and alternate hypothesis. The…

Q: The personal director of an engineering company believes that there is a significant positive…

A: Since you have posted multiple sub-parts, we will solve the first three sub-parts for you. To get…

Q: Construct an independent samples t-test by hand and write a brief paragraph about whether the…

A: From the given information, Consider, the data can be expressed as: In-Home Treatment =X1…

Q: Regan is interested in comparing the outdoor activity of people from different parts of the country.…

A: Analysis of variance (ANOVA) is a statistical technique that is used to check if the means of two or…

Q: After looking at MLs, the researcher decides to look at the entire sample. In her analysis the…

A: We use the given output to find out the solution.

Q: soccer players were oblained independently and weigne accompa Arandom sampie of male college…

A: Test statistic t=4.69

Q: Find the coefficient of variation for each of the two sets of​ data, then compare the variation.…

A: Given, Automated Menu:  5.5, 7.4, 3.9, 2.9, 9.2, 6.3, 11.7 Live​ agent:  6.2, 2.9, 4.4, 4.1, 3.4,…

Q: Dependent-samples t-test. A researcher wants to examine if play therapy can be an effective…

A: (a) The null hypothesis is a simple statement about the value of the population parameter which is…

Q: A social worker wants to know if there is a relationship between the number of foster children…

A: Here in the above question there is only one observed value, n = 50

Q: Read and Understand Annabeth wants to find out the severity of ADHD symptoms of her fellow teenagers…

A: The mean and standard deviation (SD) of the experimental group is observed as 4.4 and 0.3,…

Q: Researchers want to know if a tutoring program affects students’ ACT scores. They used a sample of…

A: 1. Let μ1 denotes the population mean pretest score, and  μ2 denotes the population mean posttest…

Q: Which of these would not make you question the results of a study? O A. Anonymous answers O B. A…

A:

Q: The customer service department of a phone company is experimenting with two different systems. On…

A:

Q: Astatistics student wanted to find out whether gender and the use of turn signals when driving were…

A: The first student data table:   Men Women Total Turn Signal 535 402 937 No Signal 424 205 629…

Q: 6. Television station ABC wants to know the proportion of TV owners in Metro Cebu who watch the…

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

Q: Joe wanted to conduct an experiment where participants were randomly assigned to receive either no…

A: ANOVA: The ANOVA (analysis of variance) is a test used for comparing the means of several…

Q: For each of the studies described in questions a) and b), indicate the appropriate statistical test…

A: Since we are assuming that all the underlying assumptions of the test has been met, following are…

Q: A researcher wants to know if there are differences in aggressive behavior between 5th graders, 6th…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The scatterplot below shows the relationship between two random variables X and Y. (a) Is the…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: INTERPRET THE result of the data:   The scores of 6 job applicants. P.S. treat this data as if it…

A: Descriptive of the data set or the summary of the data observation can be explained using the two…

Q: Do you get cookies with your dinner? The UM student decided to stop by MoJo one day at dinner, and…

A: The study is about the getting cookie with your dinner or not.

Q: A marketing director developed a short television commercial to improve the image of a company.  The…

A: Given Data: n=20 There is only 1 sample but two results