A researcher has conducted a correlated t-test by recruiting 8 participants (N=8). The data for the analysis is shown below. In the processof computing t_observed, what are the sum of squared difference scores?ParticipantsExperimental Control12345678Ⓒa.-27Ob. 27O c. 271O d. 1277CO2FS72810121151291113101192214

Answered: Image /qna-images/answer/3d84be11-13ef-4af0-9a34-00412feba8d3.jpg

Answered: A researcher has conducted a correlated…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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17
The data below show sport preference and age of participant from a random sample of members of a sports club. Is there evidence to suggest that they are related? Frequencies of Sport Preference and Age Tennis Swimming Basketball 18-25 74 100 98 26-30 99 96 82 31-40 67 74 75 Over 40 85 59 64 What can be concluded at the αα = 0.05 significance level? What is the correct statistical test to use? Paired t-test Homogeneity Independence Goodness-of-Fit What are the null and alternative hypotheses?H0:H0: Age and sport preference are independent. The age distribution is not the same for each sport. Age and sport preference are dependent. The age distribution is the same for each sport. H1:H1: The age distribution is not the same for each sport. Age and sport preference are dependent. The age distribution is the same for each sport. Age and sport preference are independent. The test-statistic for this data = (Please show your answer to three decimal places.)…
A hypertensions trial is mounted and 12 participants are randomly assigned to receive either a new medication or a placebo. Each participant takes assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned medication the data are shown in table 7-9 is there a difference in the mean SBP between treatment? Run the appropriate test at a =0.05
An experiment was carried out to compare the sound distortion produced by 4 different types of coating on magnetic tape. The ANOVA table for this data is given below, where X indicates a missing value. Source Degrees of Freedom Sum of Squares Mean Squares IF Treatment X 14.49 X Error X X X Total 49 165.69 Compute the F statistic. Give your answer to 2 decimal places.
A hospital administrator wants a statistic to calculate the relationship between the degree of patient satisfaction and whether that patient was treated in the ER or admitted to the hospital. one-sample t point-biserial correlation O independent-measures t sign test
A teacher would like to determine if quiz scores improve after completion of a worksheet. The students take a pre-quiz before the worksheet and then another quiz after the worksheet. (Pre-quiz score - Post-quiz score) Assume quiz scores are normally distributed. The grades for each quiz are given below. Use a significance level of a = 0.05. H₂: Hd = 0 Ha: Hd <0 pre-quiz 12 16 17 16 11 15 12 7 15 13 post-quiz 13 16 15 16 14 15 13 9 14 15 What is the test statistic? test statistic = (Report answer accurate to 2 decimal places.) What is the p-value for this sample? p-value= (Report answer accurate to 3 decimal places.) The correct decision is to Select an answer Conclusion: Select an answer that the worksheet improved quiz scores.
A statistic center compiles data on the length of stay by patients in short-term hospitals. A random sample of 21 patients yielded the data on length of stay, in days, shown below. Complete parts (a) through (e) below. 24 5 6 15 3 16 49 21 23 14 13 6 14 1 10 21 6 11 12 15 21 Determine and interpret the interquartile range (IQR). IQR=
Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 73.5 88 63.9 85.5 62.7 65 83.2 61.9 88 62.7 Test grades are believed to be normally distributed.Use a significance level of 5%. State the alternative hypothesis: HA:HA: μ>65μ>65 μ<65μ<65 μ≠65μ≠65 State the mean of the sample: State the standard error of the sample means: State the test statistic: t=t= State the p-value: Decision: Fail to reject the null hypothesis. Reject the null hypothesis.
A sample of 100 clients of an exercise facility was selected. Let X = the number of days per week that a randomly selected client uses the exercise facility. Frequency 2 1 15 30 3 27 4 10 8 6. 8 Find the 80th percentile.
A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 279 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased 54 71 125 Vaccinated Not Vaccinated Total 33 121 154 Total 87 192 279 Copy Data Step 6 of 8: Find the critical value of the test at the 0.025 level of significance. Round your answer to three decimal places.
The data below show sport preference and age of participant from a random sample of members of a sports club. Is there evidence to suggest that they are related? Frequencies of Sport Preference and Age Tennis Swimming Basketball 18-25 87 83 85 26-30 98 93 89 31-40 66 66 56 Over 40 55 89 58 What can be concluded at the a = 0.10 significance level? a. What is the correct statistical test to use? Homogeneity Independence Paired t-test Goodness-of-Fit b. What are the null and alternative hypotheses? Ho The age distribution is not the same for each sport. Age and sport preference are dependent. The age distribution is the same for each sport. O Age and sport preference are independent. H₁: The age distribution is not the same for each sport. Age and sport preference are dependent. Age and sport preference are independent. The age distribution is the same for each sport. c. The test-statistic for this data = d. The p-value for this sample = e. The p-value is Select an answer α (Please show…
A one-sample z-test compares a sample with 50 participants with mean 83 to a population with mean 80 and standard deviation 10. What is the effect size d? 0.1 0.3 0.5 0.7

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