A psychologist is interested in testing whether there is a difference in the distribution of personality...

A psychologist is interested in testing whether there is a difference in the distribution of personality types for business majors and social science majors. The results of the study are shown in the table below. Conduct a test of homogeneity. Test at a 5% level of significance. Open Conscientious Extrovert Agreeable Neurotic Business 40 52 48 63 56 Social Science 71 74 61 80 63

What is the test statistic? (Round your answer to two decimal places.)

Part (f) What is the p-value? (Round your answer to four decimal places.)

Expert Solution

orchestra answered 2 years ago

QUESTION 4 A researcher is interested in testing whether there is a difference in aggression levels...

QUESTION 4 A researcher is interested in testing whether there is a difference in aggression levels between kids who watch only TV shows, only play video game, or watch TV and play video games. Which statistical test should be used to determine whether a difference exists in aggression levels for these 3 groups? T-Test for One Sample T-Test for Independent Samples T-Test for Related Samples One-Way ANOVA Two-Variable Chi Square Test Question 5: A psychologist is interested in the relationship...

a) A psychologist is interested in whether or not handedness is related to gender. Specifically, she...

a) A psychologist is interested in whether or not handedness is related to gender. Specifically, she wants to know if the percentage left-handed men in the population is different from the percentage of left-handed women. She collected data on handedness for 200 men and 200 women. What type of statistical test would be appropriate? options: a) Chi-square goodness of fit test b) Independent samples t-test c) Paired t-test d) Chi-square test of independence b) Nima investigated the relationship between optimism...

A school psychologist was interested in whether the 12 students in the chess club had a...

A school psychologist was interested in whether the 12 students in the chess club had a higher or lower mean grade point average (GPA) than the other students at a school. The overall GPA at the school was 2.55 but variability is unknown. The average GPA of students in the chess club was 2.76. Use the .05 significance level. SS=2.16. A) What is the appropriate test for the data? (Z-Test, t-test for independent, t-test for dependent) B) Conduct the appropriate...

An educational psychologist is interested in knowing whether the experience of attending preschool is related to...

An educational psychologist is interested in knowing whether the experience of attending preschool is related to subsequent sociability. She identifies two groups of first graders: those who had attended preschool and those who had not. Then each child is assigned a sociability score on the basis of observations made in the classroom and on the playground. Perform the 4 steps of hypothesis testing if using alpha is set at .05 for a two-tailed test. The following sociability results are obtained:...

the leaders of the study are interested in the determining whether there is a difference in...

the leaders of the study are interested in the determining whether there is a difference in mean annual contributions for individuals covered by TSA's and those with 401(k) retirements program. you can use the results form the following table to test if the population mean of individual covered by TSAs is higher than those covered by 401(k). TSA 401(K) n1 = 8 n2=10 x1= 322.5 x2=298.3 s1=48.3 s2= 53.3 1. Formulate the appropriate null and alternative hypotheses 2....

A photographer is interested in whether there is a difference in the proportions of adults and...

A photographer is interested in whether there is a difference in the proportions of adults and children who like to take pictures. In a survey of 310 randomly selected adults and 270 randomly selected children, 219 adults and 215 children said they like to take pictures. a) Define Population 1 and Population 2. b) Define the parameter of interest. c) Name the distribution required to calculate confidence intervals. (Check the relevant criteria.) d) Construct a 90% confidence interval for the...

A political scientist is interested in the question of whether or not there is a difference...

A political scientist is interested in the question of whether or not there is a difference between Republicans and Democrats when it comes to their involvement in voluntary associations. Using a 25-point scale to measure involvement in voluntary associations, and collecting information from a random sample of 17 Republicans and 12 Democrats, the political scientist discovers the following: Republicans: Mean of 12.56, standard deviation of 3.77 Democrats: Mean of 16.43, standard deviation of 4.21 Test the null hypothesis at the...

Assume that a researcher is interested in testing whether there is a significant effect of video...

Assume that a researcher is interested in testing whether there is a significant effect of video game playing on teenagers’ visual-spatial abilities. The researcher randomly selects 4 participants and measures their visual-spatial cognition before and after playing video games for 4 hours a day for a week.*SHOW WORK FOR THIS PROBLEM. a. Use the data in the table below to conduct the appropriate statistical test including all of the necessary steps. Assume α = .10. Participant Xbefore Xafter A 85...

. A psychologist is interested in determining whether immediate memory capacity is affected by sleep loss....

. A psychologist is interested in determining whether immediate memory capacity is affected by sleep loss. Immediate memory is defined as the amount of material that can be remembered immediately after it has been presented. Twelve students are randomly selected from lower division college courses and randomly assigned to two groups of 6 each. One of the groups is sleep deprived for 24 hours before the material is presented. All subjects in the other group receive the normal amount of...

1. An educational psychologist is interested in knowing whether the experience of attending preschool is related...

1. An educational psychologist is interested in knowing whether the experience of attending preschool is related to subsequent sociability. She identifies two groups of first graders: those who had attended preschool and those who had not. Then each child is assigned a sociability score on the basis of observations made in the classroom and on the playground. Perform the 4 steps of hypothesis testing if using alpha is set at .05 for a two-tailed test. The following sociability results are...

Question