do I interpret Shapiro-Wilk for independent samples T test when significance for each group is so different?
Q: The p-value for this test is: ( round to 4 decimals)
A:
Q: n 2019 Chicago Hope Hospital hired new nurses from two top universities in the country. After one…
A: From the given information, Consider, the data can be shown below: University A University B…
Q: When the One-Way Analysis of Variance (ANOVA) result is significant, that is, the null hypothesis…
A:
Q: Why are the formulas and procedure for the paired samples t-test different from those of the…
A: Option a, "to account for lack of balance in the design," is not correct because the paired samples…
Q: A different I/O psychologist wants to know if there is a difference in worker evaluations depending…
A:
Q: Looking for a birthday cake, you checked the cake prices on three different stores - Red Ribbon,…
A: Three cake shops : Red ribbon, Vizco's and Tea house Here shortlisted : vizco's Different flavors:…
Q: For any scenario in which an independent-samples t-test can be used, a one-way ANOVA can be used as…
A: Since both the tests are used to compare the mean response. The only difference is that we use…
Q: 30. Listed below are head injury data from crash test dummies. These measurements are in hic, which…
A: From the given Information, a) The design is balanced, since all the possible level combinations…
Q: Random and independent samples of 900 unmarried people and 1200 married people were asked if they…
A: Let, X1: The unmarried people who believes that a good diet is very important to good health. X1:…
Q: The following table shows the Myers-Briggs personality preferences for a random sample of 406 people…
A: The following information has been given: Observed Frequencies E I Total clergy 59 48 107…
Q: 6. Two samples are randomly selected from two groups of students who have been taught using…
A:
Q: Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly,…
A: Given data: Population 1 Population 2 66 70 71 68 69 77 73 78 66 75 66 77 65 71…
Q: Forty-minute workouts of one of the following activities three days a week will lead to a loss of…
A: Forty-minute workouts of one of the following activities three days a week will lead to a loss of…
Q: A different I/O psychologist wants to know if there is a difference in worker evaluations depending…
A: Given Data: n1=15 n2=15
Q: Population 1: 68, 67, 69, 62, 72, 66, 70 Population 2: 70, 73, 77, 72, 70, 70, 77, 71 Is there…
A: Given data : Population 1: 68, 67, 69, 62, 72, 66, 70 Population 2: 70, 73, 77, 72, 70, 70, 77, 71
Q: Three independent samples A, B and C with equal sample size of 10 each have scores 2, 3, 5, 6, 8, 6,…
A: That is, there is no evidence to conclude that there is a significant difference between the…
Q: Forty-minute workouts of one of the following activities three days a week will lead to a loss of…
A: Given information: The data represents the number of calories burned during 40-minute workouts for…
Q: In a randomized study, the use of chewing gum during studying was used to see if increased a test…
A: Given, n1 = 90 x1 = 78 n2 = 166 x2 = 131 p1 = x1n1 = 7890 = 0.8667p2 = x2n2 = 131166 = 0.7892…
Q: Provide an example (different from the ones considered in this section) of a procedure based on a…
A: A researcher wants to test the effectiveness of the training program conducted for students to…
Q: In a two-factor ANOVA, if there is a significant interaction effect this could mean that a. The…
A: Option A. Option A is incorrect because, in such cases, interpreting the main effects independently…
Q: A researcher wanted to examine whether type of dog food (freeze dried meat vs generic brand kibble)…
A: The test is to check whether type of dog food (freeze dried meat vs generic brand kibble) would…
Q: The null and alternative hypotheses would be: Select an answer p1 μ1 Select an answer ≠ =…
A: It is claimed that, freshmen psychology majors more likely to change their major before they…
Q: How many samples should be selected when the total population is 31 for goldfeld and quandt test to…
A: Goldfeld Quandt test for heteroskedasticity requires to divide the data set (population or sample)…
Q: A chi-squared test of independence can be used to determine differences between groups in a sample.
A: The chi-squared test of independence is used to test the independence of two categorical variables.
Q: If a hypothesis is true and the difference between the control group and the experimental group is…
A: Based on the concept, If a hypothesis is true and the difference between the control group and the…
Q: Two methods for teaching reading were applied to two randomly selected groups of elementary…
A: The hypothesis test is a statistical method in which one using the sample data try to check the…
Q: The manufacturer of an electrical vehicle, X, is interested in testing two different battery…
A: The given data is:Unit AUnit B23312328272929322734Given significance level = 0.01 (1%)Data is not…
Q: A HR manager in a Global Corporation is interested in finding out whether newly hired Japanese…
A: Correct answer is (D) at the α = 0.10 level, there is sufficient evidence to indicate that the…
Q: The General Social Survey (GSS) collects data on demographics, eduction and work, among many other…
A: Solution
Q: A researcher was comparing the differences between only two groups using a t-test. Would Post Hoc…
A: Given: A researcher was comparing the differences between only two groups using a t-test.
Q: The purpose a of post hoc test is to?
A: When the null hypothesis in ANOVA is rejected then post hoc tests are used.
Q: The manager of computer operations of a large company wishes to study computer usage of two…
A: (a) That is, there is no evidence to conclude that there is a difference in the mean processing…
Q: Assume that matched pairs of data from a poll of Internet users who were asked if they make travel…
A: Let η1 denote the median of the first variable and η2 denote the median of the second variable.
Q: Random samples of resting heart rates are taken from two groups. Group 1 exercises regularly, and…
A: Answer Group1: 62,71,62,68,69,69,72Group 2: 78,74,73,76,76,71,70,76n1 =7n2 =8level of significance…
Q: What are some different types of analyses I could run on a independent sample t-test?
A: Independent sample t-test : It compares the means between two unrelated group in order to find…
Q: Consider the two sample t-test with equal variances and the paired t-test. These tests are…
A: Two sample t-tests: The two-sample t-test is used when the two samples are statistically independent…
Q: An I/O psychologist wants to know if there is a difference in worker evaluations depending if the…
A: Correct Option: C. independent samples t-test
Q: Suppose an instructor would like to know if there is difference in the performance of her two…
A: Let us consider two population with mean and and standard deviation and respectively. If sample…
Step by step
Solved in 3 steps
- (Non Parametric Test) Following are the weight gains in pounds of 2 randomly samples of young turkeys fed 2 different diets: Diet 1: 16.3, 10.1, 10.7, 13.5, 14.9, 11.8, 14.3, 10.2, 12.0, 14.7, 23.6, 15.1, 14.5, 18.4, 13.2 & 14.0 Diet 2: 21.3, 23.8, 15.4, 19.6, 12.0, 13.9, 18.8, 19.2, 15.3, 20.1, 14.8, 18.9, 20.7, 21.1, 15.8, & 16.2 Test @ 0.01 level of significance to test Ho that the 2 population sampled are identical against HA that on the average the second diet produces a greater gain in weight.While an independent samples t-test compares two separate groups of people, a paired sample t-test compares the same group of people over time or across two different treatments or events or etc. True FalseResearchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
- In 1991, a person was working as an engineer at a paper company when they were laid off in round 2 of several rounds of layoffs by the company. This person sued the company for age discrimination. The engineer claimed that the laid off workers were older than others. The age of randomly selected 10 workers who were laid off and not lay off in round 2 are given below. Test the engineer's claim at 1% level of significance. Note that the data for two samples are in different column. Click this button to reveal the data No 25 33 35 38 48 55 56 Yes Uknown 55 55 64 Download CSV file Download the .csv file or copy/paste the data into Excel. After downloading .csv file, you may want to save it as a Excel Workbook. a. What is the response variable that is being compared in this study? Age b. How many samples of data are being compared in this study? 2 c. Are the samples random and independent? Yes No d. What test is used for this problem? Kruskal-Wallis TestIn 2019 Chicago Hope Hospital hired new nurses from two top universities in the country. After one year, the hospital conducts a simple study to analyse whether there is a significant difference in regard to the performance of the nurses who graduated from the two universities. Considering the maximum performance score of 100, the following is the result of independent sampling of the nurses’ performance scores. Assume the scores are not normally distributed. Table attached Question: What statistical method can be applied for this study? Explain your answerI need help with stats/2023 classify the 2 given samples as independent or dependent. sample 1: the number of home runs hit by 44 professional baseball players in their rookie season sample 2: the number of home runs hit by the same 44 professional baseball players in their final season. choose the correct answer: A. The 2 given samples are independent because the same athletes were sampled. B. The 2 given samples are independent because the different athletes were sampled C. The 2 given samples are dependent because the same athletes were sampled. D. The 2 given samples are dependent because different athletes were sampled.
- In a comparison between the mean waiting time of the patients in the hospitals of Giza and Alexandria governments the minister of Health randomly selected 60 hospitals from Giza government and their mean waiting time was 30 minutes and the previous reports showed that the variance was 10 minutes. Also a sample consist of 50 hospitals from Alexandria governments was selected and their mean waiting time of this sample was 15 minutes and from previous reports the variance was 5 minutes. 1-Construct the 95% C.I for the difference between the average waiting time in Giza & Alex2- Without any computations, discuss fully and precisely what will happen to the results you obtained in part (1) if the confidence level changed to be 99% instead of 95%. Give the reason for your answerA different I/O psychologist wants to know if there is a difference in worker evaluations depending if the employee is a male or female. A group of managers were recruited and each rated both 15 men and 15 women employee evaluations on a scale of 0-10. The ratings on the worker evaluations were recorded for each manager. Which statistical test would be best to determine if there is a significant difference between groups? one-sample t-test dependent samples t-test ANOVAHow many degrees of freedom is there for between group variance for an ANOVA on 10 groups with 20 samples in each group
- The milk yield from two breeds of goats, A and B, is categorised as low, medium or high. One hundred goats in a random sample are classified according to breed and milk yield. The results are summarised in the table below. i. Explain the difference between a test of independence and a test of homogeneity ii. Perform a chi squared test, at the 95% of significance level, to determine whether there is an association between the breed of goats and the milk yield.What is the value of the standard score for the sample proportion?Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population 2 does not. The data from these two samples is given below: Population 1: 66, 71, 66, 64, 63, 69, 70 Population 2: 77, 74, 69, 73, 74, 78, 68, 68 Is there evidence, at an a = 0.065 level of significance, to conclude that there those who exercise regularly have lower resting heart rates? Carry out an appropriate hypothesis test, filling in the information requested. A. The value of the standardized test statistic: -4.87322 B. The p-value is .00001 C. Your decision for the hypothesis test: A. Do Not Reject H₁. B. Do Not Reject Ho. C. Reject H₁. OD. Reject Ho.