9.28 Assume we know the following for a paired-samples t test: N
-32, Mdifference -1.75, s -4.0.
a. Calculate the t statistic.
b. Calculate a 95% confidence interval for a two-tailed test.
c. Calculate effect size using Cohen
9.28 Assume we know the following for a paired-samples t test: N -32, Mdifference -1.75, s...
how do i calculate the t statistic? Assume we know the following for a two-tailed, single-sample / test at p level of 0.05 for the starting salaries of recent college graduates in Texas: u=$48,400, N-117, M=$47,375, S-$4400 a. b. a. b. Calculate the t statistic Calculate a 95% confidence interval.
Look at the table for the Paired samples test to find your t calculated, df, and significance. Remember that significance level will appear in the Sig (2-tailed) column. Any value that is smaller than .05 will be significant at the .05 level or higher. In a sentence describe the results and report them in APA style, including r2 and evaluation (you will need to calculate r2 by hand). 3. What type of error in hypothesis testing is possible given the...
Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Pre 30.3000 10 5.88878 Post 4.40833 The standard error of the mean is 1.39403 (second row) Paired Differences Mean Std. Deviation Std. Error Mean 95% Confidence Interval of the Difference t df Sig. (2-tailed) Lower Upper Post-Pre 5.20000 4.61399 .006 First- Please fill in the empty boxes. (a) The appropriate critical t-statistic(s) used by SPSS default settings for this analysis is/are (b) Based on the 95% confidence interval,...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-test to determine whether the difference between hotel prices is significant at the a 0.01 confidence level Cities Atlanta Boston Chicago Dallas Denver Indianapolis Los Angeles New York City 517 Philadelphia Washington, DC 251 Hyatt Regency prices in dollars Hilton prices in dollars 90 273 204 303 189...
please please help, i'll give you thumbs up :) Paired Samples t-test Gregg Popovich, head coach of the San Antonio Spurs, had his top five scorers practice during the past week with the shooting coach Chip Engelland. They shot 100 free throws prior to working with Chip and then shot 100 free throws after working with Chip. Below are the total number of free throws made before and after working with Chip Engelland. Popovich wants to know if practicing with...
An independent-samples t test and getting ready for a date: In an example we sometimes use in our statistics classes, several semesters’ worth of male and female students were asked how long, in minutes, they spend getting ready for a date. The data reported below reflect the actual means and the approximate standard deviations for the actual data from 142 students. Men: 28, 35, 52, 14 Women: 30, 82, 53, 61 Conduct all six steps of an independent-samples t test....
Now suppose a larger sample (30 pairs vs 10 pairs) was collected and a paired t test was used to analyze the data. The output is shown below. Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Female salaries 6773.33 30 782.099 142.791 Male salaries 7213.33 30 875.227 159.794 Paired Samples Correlations N Correlation Sig. Pair 1 Female salaries & Male salaries 30 .881 .000 Paired Samples Test Paired Differences t df Sig. (2-tailed) Mean Std. Deviation...
Experimental Group Control Group Explain the T-Test result in each of these tables? Paired Samples Test Paired Differences 95% Confidence Interval of the Difference Std. Error Mean Mean Std. Deviation Lower Upper df Sig. (2-tailed) Pair 1 Fast-food in a weelk Pair 2 Size meal Size meal Pair 3 Snack on chips Snack 1.02956 245 35000 5568 2.25853 583 1.633 2.429 1.976 60000 2.30217 3.45853 591 FastFoodlnAWeekPOST 548 1.080 178 072 119 400 .280 Post 85000 78262 .12176 1.82176 on...
Paired Samples Statistics N Pair Mean SC2000 Points - 2004 92.8310 SC2001 Points - 2001 94.6034 29 29 Std. Deviation 4.3818 5.7142 Sid. Error Moan 8137 1.0611 Paired Samples Correlations N Correlation Sig. Par SC2000 Points - 2000 & SC2001 Points - 2001 1 29 .731 .000 Paired Samples Test Paired Differences 95% Confidence Interval of the Std. Error Difference Std. Deviation Lower Upper 3.9043 7250 -3.2575 2873 Moan Mean 1 dt Paif SO2000 Points - 2000- SC2001 Points -...
Imagine that a researcher is conducting a paired-samples t test. She finds that the sample mean difference is 5, the standard deviation of the difference scores is 15, and the sample size is 85. The researcher is also using a typical null hypothesis that proposes no differences between the relevant population means. Under these circumstances, what is the value of the paired-samples t statistic? Please retain a minimum of three decimal places for all steps (if relevant) and provide a...