Suppose a sample of statistics students (N = 30) has a distribution of grades with a mean of 70 and standard deviation of 15; the confidence interval is 68%, interpret the result.
What will be an ideal response?
Sixty-eight percent of grades fall between 67.26 and 72.74. There is a 68% probability of the mean for another sample falling within these bounds. We are 68% confident that the average student’s grade is between 67.26 and 72.74. (Note: Similar interpretations can be asked for the following confidence intervals. Only the percentages and bounds would alter according to the question/results.)
You might also like to view...
The 1920s was a time of increased interest in child welfare services
a. True b. False
News production researchers like Gans argue that most news stories about natural or technological disasters (airplane crashes) place the greatest emphasis on
a) the effort made by social or political elites to restore order b) criticisms of the failings of government agencies c) criticisms of the failings of private enterprise d) the inability of average persons to come to grips with tragedy
To make the formula for the standard error of the mean applicable to sample data, the
denominator changes to the square root of _______. a. N-1 b. N c. N+1 d. N2
According to the text, assessment helps member and workers to identify ______.
a. individual diagnoses or conditions that are likely to impact group development b. shared history or past experiences that members have in common c. areas in which the worker and members are likely to come into conflict d. steps they need to take to meet goals as well as strengths and limitations impacting this work