Ecamm is your best choice since you are on MAC. We recommend Supertintin on Windows. Many people use camstudio also which is a general purpose screen recorder. Ecammm and Supertintin are designed for online video recording only. There are charges for Ecam and Supertintin.
In another study you have a standard deviation of 12, a mean of 20 and a sample size of 50. What is the standard error?
The standard error has been calculated as 2.6 and the sample mean is 10.00. Thus the 95% confidence interval lies between
Finally, you still have the same data (a sample size of 7, a mean of 8 and a standard deviation of 4.2) plus the standard error and you know how to calculate the 95% confidence interval. Thus what is the 95% confidence interval?
You still have the same data (a sample size of 7, a mean of 8 and a standard deviation of 4.2) plus the standard error. Next how would you calculate the 95% confidence intervals?
Consider the following data to answer the next 3 questions. You have the following sample data; a sample size of 7, a mean of 8 and a standard deviation of 4.2. From this, what is the standard error?
Normal distribution theory tells us that for large samples, 95% of sample means lie within how many standard deviations above and below the population mean?
Inferential statistics deal with
Suppose that some assessment results for two types of offenders (sex offenders and violent offenders) were 60 and 50 respectively. Which type of offender did better in comparison to other offenders on the treatment course and which may need further treatment? The group means and SDs are 50 and 9 for sex offenders and 45 and 3 for violent offenders.
We do not know whether the pattern of results found in our samples accurately reflects what is happening in the population or if it is the result of _____ error.
You have the IQs of a set of people. The mean of these IQs is 100. The standard deviation is 15. One student scored 90 on the test. This produced a z-score of -0.67 or -0.7 to 1 decimal place. Using the z-score table in appendix 1, what does this mean?
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