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##### I need this asap by 2pm easter (U.S.A New york tim...

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I need this asap by 2pm easter (U.S.A New york time). Last time you send it after 2pm. thnak you. . For an independent-measures design, the sample mean difference is always located exactly in the center of the confidence interval estimate for the population mean difference. (Points: 1) True False 2. In general, as sample size increases, the width of a confidence interval also increases. (Points: 1) True False 3. Estimation is commonly used after a hypothesis test when the decision is to fail to reject the null hypothesis. (Points: 1) True False 4. The wider the confidence interval, the less precise the estimate is. With this in mind, which combination of factors will produce the most precise estimate of the population mean? (Points: 1) a sample of n = 20 with 80% confidence a sample of n = 20 with 90% confidence a sample of n = 50 with 80% confidence a sample of n = 50 with 90% confidence 5. A researcher would like to determine how the average mathematical skill level for freshmen entering the college compares with the average from freshmen 10 years ago. A sample of n = 30 freshmen is obtained and each student is given a standardized mathematics skills test. The researcher plans to use the sample data to estimate the mean score for the current population of freshmen and then compare the result with the mean obtained 10 years ago. Which estimation equation should the researcher use? (Points: 1) the single-sample t equation the independent-measures t equation the repeated-measures t equation cannot determine without additional information 6. Post tests are not needed if the decision from an analysis of variance is to fail to reject the null hypothesis. (Points: 1) True False 7. An analysis of variance produces SSwithin = 40 and SStotal = 70. In this analysis, what is the value of SSbetween? (Points: 1) 30 40 110 Cannot be determined without additional information 8. A researcher reports an F-ratio with df = 2, 36 from an independent-measures research study. Based on the df values, how many treatments were compared in the study and what was the total number of subjects participating in the study? (Points: 1) 2 treatments and 37 subjects 2 treatments and 38 subjects 3 treatments and 38 subjects 3 treatments and 39 subjects 9. Which combination of factors will produce a large value for h2? (Points: 1) large mean differences and large sample variances large mean differences and small sample variances small mean differences and large sample variances small mean differences and small sample variances 10. The following table shows the results of an analysis of variance comparing two treatment conditions with a sample of n = 11 participants in each treatment. Note that several values are missing in the table. What is the missing value for the F-ratio? Source SS df MS Between xx xx 14 F = xx Within xx xx xx Total 154 xx (Points: 1) 2 7 14 28

Paper#11754 | Written in 18-Jul-2015

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